Headlight device and bending headlight module thereof

ABSTRACT

A headlight device and a bending headlight module thereof are provided. The headlight device includes a main headlight module and a bending headlight module. The main headlight module is capable of generating a first lighting area which is a light pattern that complies with the regulations of low beam headlamps. The main headlight module includes a main optical axis, and the main headlight module defines a horizontal plane and a vertical plane perpendicular to the horizontal plane, and the main optical axis is parallel to the horizontal plane and the vertical plane. The bending headlight module is disposed close to the main headlight module, and the bending headlight module includes a first reflecting unit, a first lighting unit, a first cut-off plate unit, and a first lens unit.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application claims priority from the U.S. Provisional PatentApplication Ser. No. 62/768,159 filed Nov. 16, 2018, which applicationis incorporated herein by reference in its entirety.

Some references, which may include patents, patent applications andvarious publications, may be cited and discussed in the description ofthis disclosure. The citation and/or discussion of such references isprovided merely to clarify the description of the present disclosure andis not an admission that any such reference is “prior art” to thedisclosure described herein. All references cited and discussed in thisspecification are incorporated herein by reference in their entiretiesand to the same extent as if each reference was individuallyincorporated by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to a headlight, and more particularly toa headlight device and a bending headlight module thereof.

BACKGROUND OF THE DISCLOSURE

Firstly, because conventional headlights of a car have no turn-by-turnlighting, when performing a left turn, there will be poor illuminationat the centerline of the lane in front of the car and the left edge ofthe lane; and when performing a right turn, there will be poorillumination at the right edge of the lane ahead of the car.

In order to solve the above-mentioned problems, most of the conventionaltechnology uses a headlight device capable of turning with the degree ofthe turn of the car to produce an effect of an adaptive front-lightingsystem (AFS). However, the mechanism of the headlight device with aturning function in the conventional technology is complicated andcostly. Therefore, how to improve on the structural design to producethe effect of having a simple structural and low cost adaptivefront-lighting system (AFS) is an important issue yet to be solved inthis field.

SUMMARY OF THE DISCLOSURE

In response to the above-referenced technical inadequacies, the presentdisclosure provides a headlight device and a bending headlight modulethereof.

In one aspect, the present disclosure provides a headlight device, whichincludes a main headlight module and a bending headlight module. Themain headlight module is capable of generating a first lighting areawhich is a light pattern that complies with the regulations of low beamheadlamps. In addition, the main headlight module includes a mainoptical axis, and the main headlight module defines a horizontal planeand a vertical plane perpendicular to the horizontal plane, and the mainoptical axis is parallel to the horizontal plane and the vertical plane.The bending headlight module is disposed close to the main headlightmodule, and the bending headlight module includes a first reflectingunit, a first lighting unit, a first cut-off plate unit, and a firstlens unit. The first lighting unit is disposed corresponding to thefirst reflecting unit, the first cut-off plate unit is disposedcorresponding to the first reflecting unit, and the first lens unit isdisposed corresponding to the first reflecting unit. In addition, thebending headlight module includes a first optical axis, and a firstpredetermined angle between 7 degrees and 15 degrees is defined betweenthe normal projection of the first optical axis on the horizontal planeand the normal projection of the main optical axis on the horizontalplane or between the normal projection of the first optical axis on thehorizontal plane and the normal projection of the vertical plane on thehorizontal plane.

In another aspect, the present disclosure provides a bending headlightmodule, which includes a first reflecting unit, a first lighting unit, afirst cut-off plate unit, and a first lens unit. The first lighting unitis disposed corresponding to the first reflecting unit. The firstcut-off plate unit is disposed corresponding to the first reflectingunit. The first lens unit is disposed corresponding to the firstreflecting unit. In addition, the first cut-off plate unit includes afirst cut-off plate body, a second cut-off plate body, a cut-off plateturning part connecting between the first cut-off plate body and thesecond cut-off plate body, a cut-off plate protruding part protrudingfrom and being disposed corresponding to the first cut-off plate bodyand being close to the cut-off plate turning part, a first front cut-offedge, a first rear cut-off edge, and a first top side surface. Further,the first front cut-off edge is formed on the first cut-off plate body,the second cut-off plate body, the cut-off plate turning part, and thecut-off plate protruding part, the first rear cut-off edge is formed onthe first cut-off plate body, the second cut-off plate body, the cut-offplate turning part, and the cut-off plate protruding part, the firstfront cut-off edge and the first rear cut-off edge are disposedcorresponding to each other, and the first top side surface is connectedbetween the first front cut-off edge and the first rear cut-off edge.Furthermore, the first top side surface on the cut-off plate turningpart is an inclined plane and the first top side surface on the cut-offplate turning part is tilted towards the direction from the firstcut-off plate body to the second cut-off plate body.

One of the effects of the present disclosure is that, the headlightdevice and its bending headlight module of the present disclosure canenable the headlight device to generate the curve lighting mode (T mode)of the adaptive front-lighting system (AFS) through the technicalsolution of “a first predetermined angle between 7 degrees and 15degrees being defined between the normal projection of the first opticalaxis on the horizontal plane and the normal projection of the mainoptical axis on the horizontal plane or between the normal projection ofthe first optical axis on the horizontal plane and the normal projectionof the vertical plane on the horizontal plane”. In addition, theheadlight device and its bending headlight module of the presentdisclosure can also make the bending headlight module cooperate with themain headlight module to generate light patterns that meetspecifications and increase the lighting range of headlight devicethrough the technical solution of “the first cut-off plate unitincluding a first cut-off plate body, a second cut-off plate body, acut-off plate turning part connecting between the first cut-off platebody and the second cut-off plate body, a cut-off plate protruding partprotruding from and being disposed corresponding to the first cut-offplate body and being close to the cut-off plate turning part, a firstfront cut-off edge, a first rear cut-off edge, and a first top sidesurface”.

These and other aspects of the present disclosure will become apparentfrom the following description of the embodiment taken in conjunctionwith the following drawings and their captions, although variations andmodifications therein may be affected without departing from the spiritand scope of the novel concepts of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure will become more fully understood from thefollowing detailed description and accompanying drawings.

FIG. 1 is a perspective view of a headlight device according to a firstembodiment of the present disclosure.

FIG. 2 is another of perspective view of the headlight device accordingto the first embodiment of the present disclosure.

FIG. 3 is yet another of perspective view of the headlight deviceaccording to the first embodiment of the present disclosure.

FIG. 4 is a top view of the headlight device according to the firstembodiment of the present disclosure.

FIG. 5 is a front view of the headlight device according to the firstembodiment of the present disclosure.

FIG. 6 is an assembled view of a main headlight module of the headlightdevice according to the first embodiment of the present disclosure.

FIG. 7 is another assembled view of the main headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 8 is an exploded view of the main headlight module of the headlightdevice according to the first embodiment of the present disclosure.

FIG. 9 is another exploded view of the main headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 10 is a sectional view of the main headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 11 is another sectional view of the main headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 12 is a sectional view of the XII-XII section in FIG. 6.

FIG. 13 is a perspective view of an optical module of the main headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 14 is a light pattern diagram generated by the main headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 15 is a perspective view of a bending headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 16 is another perspective view of the bending headlight module ofthe headlight device according to the first embodiment of the presentdisclosure.

FIG. 17 is a sectional view of the XVII-XVII section in FIG. 15.

FIG. 18 is a perspective view of a first cut-off plate unit of thebending headlight module of the headlight device according to the firstembodiment of the present disclosure.

FIG. 19 is a front view of a first cut-off plate unit of the bendingheadlight module of the headlight device according to the firstembodiment of the present disclosure.

FIG. 20 is a partial view of the XX part in FIG. 19.

FIG. 21 is a top view of the first cut-off plate unit of the bendingheadlight module of the headlight device according to the firstembodiment of the present disclosure.

FIG. 22 is a sectional view in another way of the bending headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 23 is a light pattern diagram generated by the bending headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 24 is a light pattern diagram generated by the main headlightmodule and the bending headlight module of the headlight deviceaccording to the first embodiment of the present disclosure.

FIG. 25 is a side view of the main headlight module and a high-speedheadlight module of the headlight device according to the firstembodiment of the present disclosure.

FIG. 26 is a perspective view of the high-speed headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 27 is another perspective view of the high-speed headlight moduleof the headlight device according to the first embodiment of the presentdisclosure.

FIG. 28 is a sectional view of the XXVIII-XXVIII section in FIG. 26.

FIG. 29 is a perspective view of a second cut-off plate unit of thehigh-speed headlight module of the headlight device according to thefirst embodiment of the present disclosure.

FIG. 30 is a front view of the second cut-off plate unit of thehigh-speed headlight module of the headlight device according to thefirst embodiment of the present disclosure.

FIG. 31 is a partial view of the XXXI part in FIG. 30.

FIG. 32 is a top view of the second cut-off plate unit of the high-speedheadlight module of the headlight device according to the firstembodiment of the present disclosure.

FIG. 33 is a sectional view in another way of the high-speed headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 34 is a light pattern diagram generated by the high-speed headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 35 is a light pattern diagram generated by the main headlightmodule and the high-speed headlight module of the headlight deviceaccording to the first embodiment of the present disclosure.

FIG. 36 is a perspective view of a turning headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 37 is another perspective view of the turning headlight module ofthe headlight device according to the first embodiment of the presentdisclosure.

FIG. 38 is a sectional view of the XXXVIII-XXXVIII section in FIG. 36.

FIG. 39 is a perspective view of a third cut-off plate unit of theturning headlight module of the headlight device according to the firstembodiment of the present disclosure.

FIG. 40 is a front view of the third cut-off plate unit of the turningheadlight module of the headlight device according to the firstembodiment of the present disclosure.

FIG. 41 is a sectional view in another way of the turning headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 42 is a light pattern diagram generated by the turning headlightmodule of the headlight device according to the first embodiment of thepresent disclosure.

FIG. 43 is a light pattern diagram generated by the main headlightmodule and the turning headlight module of the headlight deviceaccording to the first embodiment of the present disclosure.

FIG. 44 is a perspective view of a headlight device according to asecond embodiment of the present disclosure.

FIG. 45 is another of perspective view of the headlight device accordingto the second embodiment of the present disclosure.

FIG. 46 is yet another of perspective view of the headlight deviceaccording to the second embodiment of the present disclosure.

FIG. 47 is a top view of the headlight device according to the secondembodiment of the present disclosure.

FIG. 48 is a front view of the headlight device according to the secondembodiment of the present disclosure.

FIG. 49 is a perspective view of a bending headlight module of theheadlight device according to the second embodiment of the presentdisclosure.

FIG. 50 is another perspective view of the bending headlight module ofthe headlight device according to the second embodiment of the presentdisclosure.

FIG. 51 is a sectional view of the LI-LI section in FIG. 49.

FIG. 52 is a perspective view of a first cut-off plate unit of thebending headlight module of the headlight device according to the secondembodiment of the present disclosure.

FIG. 53 is a front view of the first cut-off plate unit of the bendingheadlight module of the headlight device according to the secondembodiment of the present disclosure.

FIG. 54 is a top view of the first cut-off plate unit of the bendingheadlight module of the headlight device according to the secondembodiment of the present disclosure.

FIG. 55 is a light pattern diagram generated by the bending headlightmodule of the headlight device according to the second embodiment of thepresent disclosure.

FIG. 56 is a light pattern diagram generated by the main headlightmodule and the bending headlight module of the headlight deviceaccording to the second embodiment of the present disclosure.

FIG. 57 is a side view of the main headlight module and a high-speedheadlight module of the headlight device according to the secondembodiment of the present disclosure.

FIG. 58 is a perspective view of the high-speed headlight module of theheadlight device according to the second embodiment of the presentdisclosure.

FIG. 59 is another perspective view of the high-speed headlight moduleof the headlight device according to the second embodiment of thepresent disclosure.

FIG. 60 is a perspective view of a second cut-off plate unit of thehigh-speed headlight module of the headlight device according to thesecond embodiment of the present disclosure.

FIG. 61 is a front view of the second cut-off plate unit of thehigh-speed headlight module of the headlight device according to thesecond embodiment of the present disclosure.

FIG. 62 is a partial view of the LXII part in FIG. 61.

FIG. 63 is a top view of the second cut-off plate unit of the high-speedheadlight module of the headlight device according to the secondembodiment of the present disclosure.

FIG. 64 is a light pattern diagram generated by the high-speed headlightmodule of the headlight device according to the second embodiment of thepresent disclosure.

FIG. 65 is a light pattern diagram generated by the main headlightmodule and the high-speed headlight module of the headlight deviceaccording to the second embodiment of the present disclosure.

FIG. 66 is a perspective view of a turning headlight module of theheadlight device according to the first embodiment of the presentdisclosure.

FIG. 67 is a light pattern diagram generated by the turning headlightmodule of the headlight device according to the second embodiment of thepresent disclosure.

FIG. 68 is a light pattern diagram generated by the main headlightmodule and the turning headlight module of the headlight deviceaccording to the second embodiment of the present disclosure.

FIG. 69 is a perspective view of a bending headlight module of theheadlight device according to a third embodiment of the presentdisclosure.

FIG. 70 is another perspective view of the bending headlight module ofthe headlight device according to the third embodiment of the presentdisclosure.

FIG. 71 is a top view of the bending headlight module of the headlightdevice according to the third embodiment of the present disclosure.

FIG. 72 is a perspective view of a headlight device according to afourth embodiment of the present disclosure.

FIG. 73 is a front view of the headlight device according to the fourthembodiment of the present disclosure.

FIG. 74 is a perspective view of a headlight device according to a fifthembodiment of the present disclosure.

FIG. 75 is a front view of the headlight device according to the fifthembodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure is more particularly described in the followingexamples that are intended as illustrative only since numerousmodifications and variations therein will be apparent to those skilledin the art. Like numbers in the drawings indicate like componentsthroughout the views. As used in the description herein and throughoutthe claims that follow, unless the context clearly dictates otherwise,the meaning of “a”, “an”, and “the” includes plural reference, and themeaning of “in” includes “in” and “on”. Titles or subtitles can be usedherein for the convenience of a reader, which shall have no influence onthe scope of the present disclosure.

The terms used herein generally have their ordinary meanings in the art.In the case of conflict, the present document, including any definitionsgiven herein, will prevail. The same thing can be expressed in more thanone way. Alternative language and synonyms can be used for any term(s)discussed herein, and no special significance is to be placed uponwhether a term is elaborated or discussed herein. A recital of one ormore synonyms does not exclude the use of other synonyms. The use ofexamples anywhere in this specification including examples of any termsis illustrative only, and in no way limits the scope and meaning of thepresent disclosure or of any exemplified term. Likewise, the presentdisclosure is not limited to various embodiments given herein. Numberingterms such as “first”, “second” or “third” can be used to describevarious components, signals or the like, which are for distinguishingone component/signal from another one only, and are not intended to, norshould be construed to impose any substantive limitations on thecomponents, signals or the like.

First Embodiment

Referring to FIG. 1 to FIG. 5, a first embodiment of the presentdisclosure provides a headlight device U and a bending headlight module1 thereof. In the following, the main structure of the headlight deviceU will be described first, and the detailed structure of each headlightmodule of the headlight device U will be described. For instance, theheadlight device U includes a main headlight module 4, and the mainheadlight module 4 is capable of generating a first lighting area whichis a light pattern that complies with the regulations of low beamheadlamps. In other embodiments, the main headlight module 4 is alsocapable of generating a second lighting area which is a light patternthat complies with the regulations of low beam headlamps. In otherwords, main headlight module 4 is the headlight of the car. It is worthmentioning that, the above regulations can be in compliance withrelevant regulations such as ECE R112 or R123 in the Regulations of theUnited Nations Economic Commission for Europe (ECE regulations), or incompliance with the Light standard of the Regulations of the Society ofAutomotive Engineers (SAE), but is not limited to thereto.

Referring to FIG. 1 to FIG. 5 again, in addition to the main headlightmodule 4 for generating the light pattern of a basic lighting mode (Cmode), the headlight device U can also include other headlight modulesto provide an auxiliary light pattern when the car is on a curve, whenturning, when turning on the direction light, or when driving at highspeed, so as to increase the lighting range and brightness of theheadlight device U. In other words, the main headlight module 4 can beany kind of light structure that can produce a light type that complieswith the regulations of low beam headlamps. In addition, the mainheadlight module 4 includes a main optical axis A4, and the mainheadlight module 4 defines a horizontal plane SH and a vertical plane SVperpendicular to the horizontal plane SH, and the main optical axis A4is parallel to the horizontal plane SH and the vertical plane SV.Further, for instance, the main optical axis A4 can be a line segment atthe intersection of the horizontal plane SH and the vertical plane SV,but is not limited thereto. In other embodiments, the main optical axisA4 can also be parallel to the vertical plane SV and inclined at apredetermined tilted angle γ (as shown in FIG. 12) that is betweenpositive and negative 1 degree with the horizontal plane SH, that is,the main headlight module 4 can relatively rotate upward or downward tothe horizontal plane SH. In the figures of the present disclosure, thenormal projection of the main optical axis A4 on the horizontal plane SHand the normal projection of the vertical plane SV on the horizontalplane SH are parallel to each other, and as an exemplary illustration,the predetermined tilted angle γ between the normal projection of themain optical axis A4 on the vertical plane SV and the normal projectionof the horizontal plane SH on the vertical plane SV is 0.57 degrees.That is, the main headlight module 4 is relatively rotate downward tothe horizon plane SH. It should be noted that, the present disclosure isnot limited by the examples given above. Furthermore, it should be notedthat, the horizontal plane SH and the vertical plane SV of the presentdisclosure are respectively virtual planes, which are mainly used toexplain the configuration relationship of other vehicle headlightmodules relative to the main headlight module 4. In addition, accordingto the present disclosure, the horizontal plane SH can be parallel tothe XY plane, and the vertical plane SV can be parallel to the YZ plane,that is, the horizontal plane SH may be a ground plane.

For instance, the headlight device U can utilize the cooperation of themain headlight module 4 and other vehicle headlight modules to generatedifferent lighting modes, such as but not limited to, a basic lightingmode (C mode), a town road lighting mode (V mode), a high-speed roadlighting mode (E mode), a bad weather lighting mode (W mode), or a curvelighting mode (T mode). In addition, the above-mentioned lighting modescan be a plurality of low-beam or high-beam lighting modes (or “lightpattern”) of the adaptive front-lighting system (AFS) regulated by theEuropean Economic Commission Regulations (ECE), but is not limited tothereto. It is worth mentioning that, the high-speed road lighting mode(E mode) can be divided into a high-speed road lighting mode 1 (E1 mode,such as but not limited to, the speed of cars exceeding 110 km/hour), ahigh-speed road lighting mode 2 (e, such as but not limited to, thespeed of the car exceeding 100 km/hour), and/or the highway lightingmode 3 (E3 mode, such as but not limited to, the speed of the carexceeds 80 km/hour) according to speed.

For instance, in addition to the main headlight module 4, the headlightdevice U can also include a bending headlight module 1, a high-speedheadlight module 2 and/or a turning headlight module 3, so as to selectthe relative headlight module according to the needs of the lightingmode. For instance, when the car enters a curve, the bending headlightmodule 1 can be used to generate a curve lighting mode (T mode); whenthe car is driving at a high speed, the high-speed headlight module 2can be used to generate a high-speed road lighting mode (E mode); whenthe car turns at a crossroad, the turning headlight module 3 can be usedin the basic lighting mode (C mode) or the town road lighting mode (Vmode), and produces a lighting mode facing left or right.

In addition, the bending headlight module 1, the high-speed headlightmodule 2, and/or the turning headlight module 3 can be disposed adjacentto the main headlight module 4. It should be noted that, the “disposedadjacent to the main headlight module 4” described herein representsthat the bending headlight module 1, the high-speed headlight module 2,and/or the turning headlight module 3 are only required to be setadjacent to the main headlight module 4, and is not limited to be placedon the upper side, the lower side, or the left and right sides of themain headlight module 4.

It should be noted that, the headlight device U provided in the firstembodiment of the present disclosure is preferably applicable to leftheadlight on a left-hand drive car, but is not limited to thereto. Itshould be noted that, the structure of the headlight device U shown inFIG. 1 to FIG. 5 are exemplary illustrations of the left headlightapplied to the left-hand drive car. The following will firstlyillustrate the structure of the main headlight module 4, the bendingheadlight module 1, the high-speed headlight module 2, and the turningheadlight module 3 when applied to the left headlight of left-hand drivecar, and the subsequent embodiments will further illustrate thestructure when the bending headlight module 1, the high-speed headlightmodule 2, the turning headlight module 3, and the main headlight module4 are applied to the right headlight of a left-hand drive car.

Referring to FIG. 1 to FIG. 5, which are to be read in conjunction withFIG. 6 to FIG. 12, the main headlight module 4 applied to the left-handdrive car will being illustrate as follow. It should be noted that, themain headlight module 4 can be applied to left headlight or rightheadlight. Specifically speaking, the main headlight module 4 mainlyincludes a base 41, a first optical module 42, a second optical module43, a light distribution lens 44, and an optical module 45. The firstoptical module 42 and the second optical module 43 are disposed on thebase 1 and are disposed correspondingly to each other, and the positionof the light distribution lens 44 corresponds to the first opticalmodule 42 and the second optical module 43, and the optical module 45 isdisposed between the base 41 and the light distribution lens 44. Forinstance, when the first optical module 42 cooperates with the lightdistribution lens 44 and the optical module 45, a low beam light patterncan be generated. When the first optical module 42 and/or the secondoptical module 43 cooperates with the light distribution lens 44 and theoptical module 45, a high beam light pattern can be generated. However,the above-mentioned example is only one of the feasible embodiments andis not intended to limit the present disclosure.

The optical module 45 can include a first light guide 451 that is closeto the base 41 and a second light guide 452 that is far from the base41. The first light guide 451 is an opaque material and the second lightguide 452 is a light transmitting material. An upper surface 4510 of thefirst light guide 451 and an upper surface 4520 of the second lightguide 452 are located near the main optical axis A4. Further, the base41 can be used as the base of the entire main headlight module 4, whichhas a bearing surface 4100 and a positioning structure 411 extendingfrom the bearing surface 4100. The first optical module 42 includes afirst circuit board 421, a first lighting element 422, and a firstreflecting element 423. The first circuit board 421 is disposed on thebearing surface 4100, the first lighting element 422 is electricallyconnected to the first circuit board 421, and the position of the firstreflecting element 423 corresponds to the first lighting element 422 toreflect the light that the first lighting element 422 emitted. Thesecond optical module 43 includes a second circuit board 431, a secondlighting element 432, and a second reflecting unit 433. The secondcircuit board 431 is fixedly connected to the positioning structure 411,the second lighting element 432 is electrically connected to the secondcircuit board 431, and the position of the second reflecting unit 433corresponds to the second lighting element 432 to reflect the light thatthe second lighting element 432 emitted. In an unillustrated embodiment,the base 41 may not include the positioning structure 411, and thesecond circuit board 431 is also disposed on the bearing surface 4100and staggered from the position of the first circuit board 421.

For instance, the positioning structure 411 is a protrusion. The secondcircuit board 431 includes a central area 4311 for setting the secondlighting element 432 and at least one surrounding area 4312 on a side ofthe central area 4311. The at least one surrounding area 4312 is fixedlyconnected to the upper surface (not labeled) of the positioningstructure 411, and the central area 4311 is exposed from the positioningstructure 411. In addition, the first circuit board 421 and the secondcircuit board 431 are substantially horizontally arranged, and the lightoutput direction of the first lighting element 422 is different from thelight output direction of the second lighting element 432 of the secondoptical module 43. For instance, the light output direction of the firstlighting element 422 is opposite to that of the second lighting element432. However, the detail of the above-mentioned example is only one ofthe feasible embodiments and is not intended to limit the presentdisclosure. Preferably, the base 41 can have a good heat conduction andheat dissipation capabilities to effectively remove the heat generatedby the first lighting element 422 and the second lighting element 432,thereby improving the reliability and service life of the first lightingelement 422 and the second lighting element 432. For instance, thematerial of the base 41 can be a highly thermally conductive metal (suchas but not limited to, aluminum), and the base 41 can include multiplecooling structures 412. In addition, the number, shape, and distributionof the cooling structures 412 can be changed according to the heatdissipation requirements, and is not particularly limited.

The first reflecting element 423 of the first optical module 42 is areflecting cup and has a reflecting surface, which is a multi-curvaturecomposite surface that is exemplified as an ellipsoid in thisembodiment. The first reflecting element 423 includes a first focalpoint 423 a and a second focal point 423 b. The first lighting element422 can correspond to the first focal point 423 a and the second focalpoint 423 b can correspond to the optical module 45, for instance, thesecond focal point 423 b may be located on the upper surface 4520 of thesecond light guide 452. In addition, the light distribution lens 441includes a main optical axis A4 and a light distribution lens focalpoint 44 a located on the main optical axis A4. The second focal point423 b of the first reflecting element 423 can be located on the mainoptical axis A4 and communicate with the light distribution lens focalpoint 44 a, or the second focal point 423 b of the first reflectingelement 423 can deviate from the main optical axis A4 and be locatednear the light distribution lens focal point 44 a. However, the detailof the above-mentioned example is only one of the feasible embodimentsand is not intended to limit the present disclosure.

For instance, the first lighting element 422 of the first optical module42 can be a light emitting diode (LED) or a light emitting diode packagestructure (LED package structure). For instance, the first lightingelement 422 is a light emitting diode package structure and includes oneor more light-emitting diodes. In addition, the first lighting element422 can be disposed on or near the first focal point 423 a of the firstreflecting element 423. The first circuit board 421 of the first opticalmodule 42 can be a metal-based printed circuit board (MCPCB). However,the detail of the above-mentioned example is only one of the feasibleembodiments and is not intended to limit the present disclosure.

The second reflecting unit 423 of the second optical module 42 is areflecting cup and has a reflecting surface, which is a multi-curvaturecomposite surface that can be generated by using optical simulationdesign. For instance, the second reflecting unit 433 can define at leasttwo optical axes (not shown) near the light concentration area 433 b,and these optical axes can pass through the second lighting element 432,making the second reflecting unit more effective so that it meets theregulations of automotive lamp. It should be noted that, the two opticalaxes can be parallel or non-parallel to each other, or at least oneoptical axis is parallel to the main optical axis A4. In otherembodiments, the second reflecting unit 433 can have only one opticalaxis.

The second reflecting unit 433 has a first focal point 433 a, and alight concentration area 433 b can be defined. The first focal point 433a is located in the coverage area of the second reflecting unit 433 andthe light concentration area 433 b is located outside the coverage areaof the second reflecting unit 433. Further, the position of the lightconcentration area 433 b corresponds to the optical module 45, forinstance, the light concentration area 433 b may be located on the uppersurface 4520 of the second light guide 452 or near the upper surface4520 of the second light guide 452. In addition, the main optical axisA4 can pass through the light concentration area 433 b, and the lightdistribution lens focal point 44 a can be located within the lightconcentration area 433 b, or the main optical axis A4 can deviate fromthe light concentration area 433 b, and the light distribution lensfocal point 44 a can be located near the light concentration area 433 b.However, the detail of the above-mentioned example is only one of thefeasible embodiments and is not intended to limit the presentdisclosure.

For instance, the second lighting element 432 of the second opticalmodule 43 can be a light emitting diode (LED) or a light emitting diodepackage structure (LED package structure). For instance, the secondlighting element 432 is a light emitting diode package structure andincludes one or more light-emitting diodes. In addition, the secondlighting element 432 can be disposed on or near the first focal point433 a of the second reflecting unit 433. The second circuit board 431 ofthe second optical module 43 can be a metal-based printed circuit board(MCPCB). However, the detail of the above-mentioned example is only oneof the feasible embodiments and is not intended to limit the presentdisclosure.

Referring to FIG. 6 to FIG. 12, which are to be read in conjunction withFIG. 13, the first light guide 451 and the second light guide 452 of theoptical module 45 are separately disposed, the first light guide 451 issubstantially horizontal, and a part of the first light guide 451 islocated in the coverage area of the first reflecting unit 11. Forinstance, according to actual needs, the upper surface 4510 of the firstlight guide 451 can have reflective or extinction characteristics. Thesecond light guide 452 of the optical module 45 is in a standing state,and the second light guide 452 is located outside of the coverage areaof the first reflecting element 423. It is worth mentioning that, thesecond light guide 452 can be in a vertical standing state or aninclined standing state. However, the detail of the above-mentionedexample is only one of the feasible embodiments and is not intended tolimit the present disclosure.

For instance, the first light guide 451 is a reflective plate, which isnext to the second circuit board 431 and extends in a direction to thelight distribution lens 44, and the first light guide 451 includes anotch 4514. The second light guide 452 is a light guide being disposedat notch 4514 of the first light guide 451, and the position of thesecond light guide 452 corresponds to the second optical module 43.Preferably, the upper surface 4510 of the first light guide 451 and theboard surface (not labeled) of the second circuit board 431 aresubstantially flush.

Further, the material of the second light guide 452 can be, but is notlimited to being, polymethyl methacrylate (PMMA) or silicone rubber. Theshape and size of the second light guide 452 and the notch 4514 of thefirst light guide 451 roughly match, the notch 4514 of the first lightguide 451 is exemplified as an arc notch and the second light guide 452is exemplified as an arc, but is not limited thereto.

It is worth mentioning that, the upper surface 451 of the first lightguide 451 is higher than the upper surface 4520 of the second lightguide 452, and the normal projection of the upper surface 4510 of thefirst light guide 451 and the upper surface 4520 of the second lightguide 452 partially overlap, and the upper surface 4520 of the secondlight guide 452 can be a plane or inclined plane.

The second optical module 43 can further include a shading element 434,which is disposed between the second reflecting unit 433 and the secondlight guide 452, and the shading element 434 has an opening 4340 thatallows only effective light emitted by the second lighting element 432to pass through. Further, the shading element 434 can be a cut-off plateand can stand perpendicularly, but is not limited thereto. Thereby, thelight emitted by the second optical module 43 can be prevented frombeing emitted outward according to the planned light path, which wouldresult in stray light to occur outside of the required lighting pattern.The term “effective light” herein refers to light that can contribute toa desired lighting pattern (or lighting type).

Referring to FIG. 13, the optical design of the first light guide 451and the second light guide 452 of the optical module 45 is describedbelow. The optical design can generate a cut-off line for the low beamof the low-beam lamp that complies with the ECE R123 specification ofthe vehicle lamp regulations. The first light guide 451 has two externaloptical areas 451 b and a central optical area 451 a located between thetwo external optical areas 451 b. In addition, the upper surface 4510 ofthe first light guide 451 includes a first reflecting plane 4511, asecond reflecting plane 4512, and a reflecting bevel plane 4513connected between the first reflecting plane 4511 and the secondreflecting plane 4512. The first reflecting plane 4511 and the secondreflecting plane 4512 are respectively located in two external opticalareas 451 b, and the position of the first reflecting plane 4511 ishigher than the second reflecting plane 4512, and the reflecting bevelplane 4513 is located in the central optical area 451 a.

The second light guide 452 also includes two external optical areas 452b and a central optical area 452 a located between the two externaloptical areas 452 b. In addition, the upper surface 4520 of the secondlight guide 452 includes two first optical planes 4523 and a steppedconvex structure 4524 disposed between the two first optical planes4523. The two first optical planes 4523 are located in two externaloptical areas 452 b, and the two first optical planes 4523 areapproximately flush, and the stepped convex structure 4524 is located inthe central optical area 452 a.

It is worth mentioning that, the stepped convex structure 4524 caninclude a first optical bevel plane 45241, a second optical bevel plane45242, and a second optical plane 45243. The first optical bevel plane45241 is connected to one of the two first optical plane 4523, thesecond optical bevel plane 45242 is connected to the other one of thetwo first optical planes 4523, the second optical plane 45243 isconnected between the first optical bevel plane 45241 and the secondoptical bevel plane 45242, and the second optical plane 45243 is higherthan the first optical plane 4523. Further, the first optical bevelplane 45241 and the second optical bevel plane 45242 are inclined indifferent directions. The area of the second optical bevel plane 45242is smaller than the area of the first optical bevel plane 45241, and theslope (or inclined angle) of the second optical bevel plane 45242 isgreater than the slope of the first optical bevel plane 45241 (orinclined angle). In addition, the light emitted by the second opticalbevel plane 45242 is close to the perpendicular centerline of the lowbeam light pattern.

Referring to FIG. 14, the emitted light generated by the first lightingelement 422 can be emitted onto the first reflecting element 423, andthe emitted light can be emitted toward the light distribution lens 44through the reflection of the first reflecting element 423. In addition,the light emitted in the direction of the light distribution lens 44 canbe blocked by the optical module 45, so that the emitted first lightingarea generates a cut-off line. Simultaneously, the emitted firstlighting area is a light pattern that complies with the regulations oflow beam headlamps. However, it should be noted that, the structure ofthe main headlight module 4 provided by the present disclosure is merelyan example. In other embodiments, the main headlight module 4 can alsobe an architecture that can produce a light pattern that complies withthe regulations of low beam headlamps.

Referring to FIG. 1 to FIG. 5, which are to be read in conjunction withFIG. 15 to FIG. 17, the following will first describe the structure whenthe headlight device U is the left headlight on a left-hand drive carand the structure of the bending headlight module 1 of the leftheadlight on the left-hand drive car.

Specifically speaking, the bending headlight module 1 can be disposedadjacent to the main headlight module 4, and the bending headlightmodule 1 can include a first reflecting unit 11, a first lighting unit12, a first cut-off plate unit 13A, and a first lens unit 14. The firstlighting unit 12 can be disposed corresponding to the first reflectingunit 11, the first cut-off plate unit 13A can be disposed correspondingto the first reflecting unit 11, and the first lens unit 14 can bedisposed corresponding to the first reflecting unit 11.

The bending headlight module 1 can have a first optical axis A1, and thefirst optical axis A1 can be the optical axis of the first lens unit 14.A first predetermined angle θ1 between 7 degrees and 15 degrees isdefined between the normal projection of the first optical axis A1 onthe horizontal plane SH and the normal projection of the main opticalaxis A4 on the horizontal plane SH, or is defined between the normalprojection of the first optical axis A1 on the horizontal plane SH andthe normal projection of the vertical plane SV on the horizontal planeSH. Preferably, the first predetermined angle θ1 can be between 8degrees and 14 degrees, and more preferably, the first predeterminedangle θ1 can be between 9 degrees and 13 degrees. In the presentdisclosure, as an exemplary description, the first predetermined angleθ1 between the normal projection of the first optical axis A1 on thehorizontal plane SH and the normal projection of the vertical plane SVon the horizontal plane SH is 11.3 degrees. It should be noted that, inorder to better explain the figure, the first predetermined angle θ1between the normal projection of the first optical axis A1 on thehorizontal plane SH and the normal projection of the main optical axisA4 on the horizontal plane SH or between the normal projection of thefirst optical axis A1 on the horizontal plane SH and normal projectionof the vertical plane SV on the horizontal plane SH is marked with aline segment parallel to the main optical axis A4. For instance, thefirst reflecting unit 11 can be a reflecting surface having an ellipticcurvature, and the first lighting unit 12 can be, but is not limited tobeing, a light emitting diode (LED) or a light emitting diode packagestructure (LED package structure).

As shown in FIG. 4, according to the first embodiment of the presentdisclosure, the bending headlight module 1 in the left headlight of theleft-hand drive car can be turned left relatively to the main headlightmodule 4, so that the first predetermined angle θ1 between the firstoptical axis A1 of the bending headlight module 1 and the main opticalaxis A4 or between the first optical axis A1 of the bending headlightmodule 1 and the vertical plane SV is provided, thereby generating alight pattern as shown in FIG. 23. Further, when the main headlightmodule 4 and the bending headlight module 1 are lit at the same time,the light patterns shown in FIG. 24 can be generated. In other words, itcan be observed by comparing FIG. 24 and FIG. 14 that it can be judgedfrom the horizontal line HH and the perpendicular line VV in the lightpattern diagram that when the main headlight module 4 and the bendingheadlight module 1 are lit at the same time, the lighting range in thefront left can be increased.

It is worth mentioning that, when the main optical axis A4 is parallelto the horizontal plane SH, the normal projection of the first opticalaxis A1 of the bending headlight module 1 on the vertical plane SV andthe normal projection of the main optical axis A4 on the vertical planeSV are parallel to each other. Therefore, in this embodiment, thebending headlight module 1 is only turned to the left relative to themain headlight module 4, so that the lighting direction of the bendingheadlight module 1 is at the front left of the left-hand drive car, andthe extension direction of the first optical axis A1 is toward the frontleft side, that is, the extension direction of the first optical axis A1is extended toward the front left and corresponds to the main opticalaxis A4. However, it should be noted that, in other embodiments, whenthere is a predetermined tilted angle γ other than 0 degrees between themain optical axis A4 and the horizontal plane SH, the normal projectionof the first optical axis A1 of the bending headlight module 1 on thevertical plane SV and the normal projection of the main optical axis A4on the vertical plane SV are not parallel to each other.

Referring to FIG. 17, the first reflecting unit 11 can include a firstfocal point 11 a and a second focal point 11 b corresponding to thefirst focal point 11 a of the first reflecting unit 11. In other words,the first reflecting unit 11 can include a reflecting surface with anelliptical curvature. In addition, the first lighting unit 12 cancorrespond to the first focal point 11 a of the first reflecting unit11, and the first lens unit 14 can include a first lens focal point 14a. The first lens focal point 14 a of the first lens unit 14 correspondsto the second focal point 11 b of the first reflecting unit 11 and islocated on the first optical axis A1. For instance, the first lightingunit 12 can be disposed on the first focal point 11 a of the firstreflecting unit 11, and the first lens focal point 14 a and the secondfocal point 11 b of the first reflecting unit 11 can, but not beinglimited to, overlap with each other. For instance, the presentdisclosure uses the diameter of the first lens unit 14 as 26 mm as anexemplary description, but is not limited thereto.

Referring to FIG. 17, which is to be read in conjunction with FIG. 18 toFIG. 21, the first cut-off plate unit 13A is a cut-off plate forgenerating a cut-off line to produce a light pattern that complies withregulations. The first cut-off plate unit 13A can include a firstcut-off plate body 131, a second cut-off plate body 132, a cut-off plateturning part 133 connected between the first cut-off plate body 131 andthe second cut-off plate body 132, a cut-off plate protruding part 134protruding from the first cut-off plate body 131 and being adjacent tothe cut-off plate turning part 133, a first front cut-off edge 13 a, afirst rear cut-off edge 13 b, and a first top side surface 13 c. Inaddition, the first front cut-off edge 13 a can be formed on the firstcut-off plate body 131, the second cut-off plate body 132, the cut-offplate turning part 133, and the cut-off plate protruding part 134, andthe first rear cut-off edge 13 b can be formed on the first cut-offplate body 131, the second cut-off plate body 132, the cut-off plateturning part 133, and the cut-off plate protruding part 134. Further,the first front cut-off edge 13 a and the first rear cut-off edge 13 bare disposed corresponding to each other, and the first top side surface13 c is connected between the first front cut-off edge 13 a and thefirst rear cut-off edge 13 b. Furthermore, the second focal point 11 bof the first reflecting unit 11 can preferably be located on the firstfront cut-off edge 13 a, but is not limited thereto.

More specifically, the first top side surface 13 c on the cut-off plateturning part 133 is an inclined plane and the first top side surface 13c on the cut-off plate turning part 133 is tilted toward the directionfrom the first cut-off plate body 131 to the second cut-off plate body132, and a first predetermined included angle β1 between 160 degrees and172 degrees is defined between the first top side surface 13 c on thecut-off plate turning part 133 and the first top side surface 13 c onthe second cut-off plate body 132. In the present disclosure, the firstpredetermined included angle β1 is 166 degrees as an exemplarydescription. In addition, a first predetermined distance D1 between 0.1millimeters (mm) and 0.5 mm is provided between the first top sidesurface 13 c on the first cut-off plate body 131 and the first top sidesurface 13 c on the second cut-off plate body 132. Preferably, the firstpredetermined distance D1 can be between 0.15 mm and 0.35 mm. The firstcut-off plate unit 13A of the present disclosure uses the firstpredetermined distance D1 as 0.25 mm as an exemplary description.Further, a second predetermined distance D2 is provided between thefirst optical axis A1 and an edge of the cut-off plate turning part 133that is adjacent to the first optical axis A1, the length of the secondpredetermined distance D2 is between 5 times and 11 times the size ofthe first predetermined distance D1. For instance, the secondpredetermined distance D2 can be between 0.5 mm and 5.5 mm. Preferably,the second predetermined distance D2 can be between 0.75 mm and 3.85 mm.The present disclosure uses the second predetermined distance D2 as 2.1mm as an exemplary description. In addition, a predetermined distance13G between 1.7 mm and 4.7 mm is provided between the first optical axisA1 and an edge of an adjacent cut-off plate protruding part 134.Preferably, the predetermined distance 13G can be between 2.2 mm and 4.2mm. In the present disclosure, the predetermined distance 13G is 3.2 mmas an exemplary description.

Referring to FIG. 4 and FIG. 19, the first cut-off plate body 131, thecut-off plate turning part 133, and part of the second cut-off platebody 132 of the first cut-off plate unit 13A are located on a first sideof the first optical axis A1, and the other part of the second cut-offplate body 132 of the first cut-off plate unit 13A is located on asecond side of the first optical axis A1, and the first side and thesecond side are respectively on opposite sides of the first optical axisA1. For instance, as shown in FIG. 4 and FIG. 19, the first side of thefirst optical axis A1 can be the left side of the first optical axis A1,and the second side of the first optical axis A1 can be the right sideof the first optical axis A1. Further, in the effective shading range ofthe first cut-off plate unit 13A, a first predetermined width W1 of thefirst cut-off plate body 131 of the first cut-off plate unit 13A can besmaller than a second predetermined width W2 of the second cut-off platebody 132 of the first cut-off plate unit 13A. It should be noted that,the effective shading range described above is the range that the firstcut-off plate unit 13A can block light.

Referring to FIG. 20, the inclined plane on the cut-off plate turningpart 133 of the first cut-off plate unit 13A extends from the cut-offplate turning part 133 of the first cut-off plate unit 13A to the secondcut-off plate body 132 of the first cut-off plate unit 13A, so as toform a groove structure G opposite to the cut-off plate protruding part134 of the first cut-off plate unit 13A and the second cut-off platebody 132 of the first cut-off plate unit 13A. In other words, apredetermined spaced C between 0 mm and 0.25 mm between the bottom endof the inclined plane on the second cut-off plate body 132 and the firsttop side surface 13 c on the second cut-off plate body 132 is provided.In the present disclosure, the predetermined spaced C of 0.12 mm istaken as an exemplary description, that is, preferably, the first topside surface 13 c on the second cut-off plate body 132 of the firstcut-off plate unit 13A can correspond to and protrude from the first topside surface 13 c on the bottom end of the inclined plane.

Referring to FIG. 17, in order to prevent the first rear cut-off edge 13b of the first cut-off plate unit 13A from blocking the lighttransmitted to the second focal point 11 b of the first reflecting unit11, a first predetermined inclined angle α1 between 20 degrees and 70degrees between the first top side surface 13 c and the first opticalaxis A1 is provided, and the present disclosure uses the firstpredetermined inclined angle α1 as 45 degrees as an exemplarydescription. That is, in the embodiment of FIG. 17, the first cut-offplate unit 13A can be inclined. However, it should be noted that, asshown in FIG. 22, in the embodiment of FIG. 22, the first cut-off plateunit 13A can be placed upright, and a first predetermined inclined angleα1 between 20 degrees and 70 degrees between the first top side surface13 c and the first optical axis A1 can also be provided.

Referring to FIG. 1 to FIG. 5, which are to be read in conjunction withFIG. 25 to FIG. 28, the following will first describe the structure whenthe headlight device U is the left headlight on a left-hand drive carand the structure of the high-speed headlight module 2 of the leftheadlight that is applied on the left-hand drive car.

Specifically speaking, the high-speed headlight module 2 can be disposedadjacent to the main headlight module 4, and the high-speed headlightmodule 2 can include a second reflecting unit 21, a second lighting unit22, a second cut-off plate unit 23A, and a second lens unit 24. Thesecond lighting unit 22 can be disposed corresponding to the secondreflecting unit 21, the second cut-off plate unit 23A can be disposedcorresponding to the second reflecting unit 21, and the second lens unit24 can be disposed corresponding to the second reflecting unit 21. Forinstance, the high-speed headlight module 2 of the headlight device U ofthe first embodiment can be mainly used to generate a light mode of ahigh-speed road lighting mode 1 (E1 mode) or a high-speed road lightingmode 2 (E2 mode), but is not limited thereto.

The high-speed headlight module 2 can include a second optical axis A2,and the second optical axis A2 can be the optical axis of the secondlens unit 24. A second predetermined angle θ2 between 0.9 degrees and2.1 degrees is defined between the normal projection of the secondoptical axis A2 on the horizontal plane SH and the normal projection ofthe main optical axis A4 on the horizontal plane SH, or is definedbetween the normal projection of the second optical axis A2 on thehorizontal plane SH and the normal projection of the vertical plane SVon the horizontal plane SH. In addition, a third predetermined angle θ3between 0.2 degrees and 0.57 degrees is defined between the normalprojection of the second optical axis A2 on the vertical plane SV andthe normal projection of the main optical axis A4 on the vertical planeSV, or is defined between the normal projection of the second opticalaxis A2 on the vertical plane SV and the normal projection of thehorizontal plane SH on the vertical plane SV. Preferably, the secondpredetermined angle θ2 can be between 1.2 degrees and 1.8 degrees, andthe third predetermined angle θ3 can be between 0.3 degrees and 0.5degrees. In the present disclosure, the second predetermined angle θ2between the normal projection of the second optical axis A2 on thehorizontal plane SH and the normal projection of the vertical plane SVon the horizontal plane SH is 1.5 degrees, and the third predeterminedangle θ3 between the normal projection of the second optical axis A2 onthe vertical plane SV and the normal projection of the horizontal planeSH on the vertical plane SV is 0.3 degrees as an exemplary description.It should be noted that, in order to better explain the figure, thesecond predetermined angle θ2 between the normal projection of thesecond optical axis A2 on the horizontal plane SH and the normalprojection of the main optical axis A4 on the vertical plane SV orbetween the normal projection of the second optical axis A2 on thehorizontal plane SH and the normal projection of the vertical plane SVon the horizontal plane SH is marked with a line segment parallel to themain optical axis A4 or the vertical plane SV. The third predeterminedangle θ3 between the normal projection of the second optical axis A2 onthe vertical plane SV and the normal projection of the main optical axisA4 on the vertical plane SV or between the normal projection of thesecond optical axis A2 on the horizontal plane SH and the normalprojection of the horizontal plane SH on the vertical plane SV is markedwith a line segment parallel to the main optical axis A4 or thehorizontal plane SH. For instance, the second reflecting unit 21 can bea reflecting surface having an elliptic curvature, and the secondlighting unit 22 can be, but not limited to being, a light emittingdiode (LED) or a light emitting diode package structure (LED packagestructure).

As shown in FIG. 4 and FIG. 25, according to the first embodiment of thepresent disclosure, the high-speed headlight module 2 in the leftheadlight of the left-hand drive car can be relatively rotated leftwardand downward to the main headlight module 4 to form the secondpredetermined angle θ2 and the third predetermined angle θ3 that resultsin a light pattern as shown in FIG. 34. Further, when the main headlightmodule 4 and the high-speed headlight module 2 are lit at the same time,the light patterns shown in FIG. 35 can be generated. In other words, itcan be observed by comparing FIG. 35 and FIG. 14 that the lightingdistance can be increased when the main headlight module 4 and thehigh-speed headlight module 2 are lit at the same time.

In addition, it is worth mentioning that, in this embodiment, thehigh-speed headlight module 2 is only rotated leftward and downwardrelative to the main headlight module 4, so that the lighting directionof the high-speed headlight module 2 is the front left and diagonallydownward of left-hand drive car, that is, the extension direction of thesecond optical axis A2 is the left front lower part of the left-handdrive car, and the extension direction of the second optical axis A2 isthe front left lower part relative to the main optical axis A4.

Referring to FIG. 28, the second reflecting unit 21 can include a firstfocal point 21 a and a second focal point 21 b corresponding to thefirst focal point 21 a of the second reflecting unit 21. In other words,the second reflecting unit 21 can include a reflecting surface with anelliptical curvature. The second lighting unit 22 is disposedcorresponding to the first focal point 21 a of the second reflectingunit 21. The second lens unit 24 can include a first lens focal point 14a, and the first lens focal point 14 a of the second lens unit 24corresponds to the second focal point 21 b of the second reflecting unit21 and is located on the second optical axis A2. For instance, thesecond lighting unit 22 can be disposed on the first focal point 21 a ofthe second reflecting unit 21, and the second lens focal point 24 a andthe second focal point 21 b of the second reflecting unit 21 can, butnot being limited to, overlap to each other. For instance, the presentdisclosure uses the diameter of the second lens unit 24 as 26 mm as anexemplary description, but is not limited thereto.

Referring to FIG. 28, which is to be read in conjunction with FIG. 29 toFIG. 32, the second cut-off plate unit 23A is a cut-off plate forgenerating a cut-off line to produce a light pattern that complies withregulations. The second cut-off plate unit 23A can include a firstcut-off plate body 231, a second cut-off plate body 232, a cut-off plateturning part 233 connected between the first cut-off plate body 231 andthe second cut-off plate body 232, a second front cut-off edge 23 a, asecond rear cut-off edge 23 b, and a second top side surface 23 c. Inaddition, the second front cut-off edge 23 a is formed on the firstcut-off plate body 231, the second cut-off plate body 232, and thecut-off plate turning part 233, and the second rear cut-off edge 23 bcan be formed on the first cut-off plate body 231, the second cut-offplate body 232 and the cut-off plate turning part 233. Further, thesecond front cut-off edge 23 a and the second rear cut-off edge 23 b aredisposed corresponding to each other, and the second top side surface 23c is connected between the second front cut-off edge 23 a and the secondrear cut-off edge 23 b. Furthermore, the second focal point 21 b of thesecond reflecting unit 21 can preferably be located on the second frontcut-off edge 23 a, but is not limited thereto.

More specifically, the second top side surface 23 c on the cut-off plateturning part 233 is an inclined plane and the second top side surface 23c on the cut-off plate turning part 233 is tilted toward the directionfrom the second cut-off plate body 232 to the first cut-off plate body231, and a second predetermined included angle β2 between 140 degreesand 160 degrees is defined between the second top side surface 23 c onthe cut-off plate turning part 233 and the second top side surface 23 con the second cut-off plate body 232, and the second predeterminedincluded angle β2 is 150 degrees as an exemplary description. Inaddition, a first predetermined distance D1 between 0.02 mm and 0.3 mmis provided between the first top side surface 23 c on the first cut-offplate body 231 and the first top side surface 23 c on the second cut-offplate body 232. Preferably, the first predetermined distance D1 can bebetween 0.05 mm and 0.2 mm, and the present disclosure uses the firstpredetermined distance D1 as 0.1 mm as an exemplary description.Further, a second predetermined distance D2 is provided between thesecond optical axis A2 and an edge of the cut-off plate turning part 233that is adjacent to the second optical axis A2, the size of the secondpredetermined distance D2 is between 2.2 times and 4.6 times the size ofthe first predetermined distance D1. For instance, the secondpredetermined distance D2 can be between 0.22 mm and 0.46 mm.Preferably, the second predetermined distance D2 is 3.4 times the sizeof the first predetermined distance D1, that is, the secondpredetermined distance D2 is 3.4 mm as an exemplary description.

Referring to FIG. 4 and FIG. 19, the first cut-off plate body 231 of thesecond cut-off plate unit 23A and the cut-off plate turning part 233 ofthe second cut-off plate unit 23A are located at a first side of thesecond optical axis A2, and the second cut-off plate body 232 of thesecond cut-off plate unit 23A is located at a second side of the secondoptical axis A2, and the first side and the second side are respectivelylocated on two opposite sides of the second optical axis A2.

Further, in the effective shading range of the second cut-off plate unit23A, a first predetermined width W1 of the first cut-off plate body 231of the second cut-off plate unit 23A is smaller than a secondpredetermined width W2 of the second cut-off plate body 232 of thesecond cut-off plate unit 23A. It should be noted that, the effectiveshading range described above is the range that the second cut-off plateunit 23A can block light.

Referring to FIG. 31, the inclined plane on the cut-off plate turningpart 233 of the second cut-off plate unit 23A extends from the cut-offplate turning part 233 of the second cut-off plate unit 23A to thesecond cut-off plate body 232 of the second cut-off plate unit 23A, soas to form a groove structure G opposite to the first cut-off plate body231 of the second cut-off plate unit 23A and second cut-off plate body232 of the second cut-off plate unit 23A.

In other words, a predetermined spaced C between 0.05 mm and 0.25 mmbetween the bottom end of the inclined plane on the first cut-off platebody 231 of the second cut-off plate unit 23A and the second top sidesurface 23 c on the first cut-off plate body 231 of the second cut-offplate unit 23A is provided. In the present disclosure, the predeterminedspaced C of 0.15 mm is taken as an exemplary description, that is,preferably, the second top side surface 23 c on the first cut-off platebody 231 of the second cut-off plate unit 23A can correspond to andprotrude from the second top side surface 23 c on the bottom end of theinclined plane.

Referring to FIG. 28, in order to prevent the second rear cut-off edge23 b of the second cut-off plate unit 23A from blocking the lighttransmitted to the second focal point 21 b of the second reflecting unit21, a second predetermined inclined angle α2 between 20 degrees and 70degrees between the second top side surface 23 c and the second opticalaxis A2 is provided, and the present disclosure uses the secondpredetermined inclined angle α2 as 45 degrees as an exemplarydescription. That is, in the embodiment of FIG. 28, the second cut-offplate unit 23A can be inclined. However, it should be noted that, asshown in FIG. 22, in the embodiment of FIG. 22, the second cut-off plateunit 23A can also be placed upright, and providing a secondpredetermined inclined angle α2 between 20 degrees and 70 degreesbetween the second top side surface 23 c and the second optical axis A2.

Referring to FIG. 1 to FIG. 5, which are to be read in conjunction withFIG. 36 to FIG. 38, the following will first describe the structure whenthe headlight device U is the left headlight on a left-hand drive carand the structure of the turning headlight module 3 of the leftheadlight on the left-hand drive car.

Specifically speaking, the turning headlight module 3 can be disposedadjacent to the main headlight module 4, and turning headlight module 3can include a third reflecting unit 31, a third lighting unit 32, athird cut-off plate unit 33A, and a third lens unit 34. The thirdlighting unit 32 can be disposed corresponding to the third reflectingunit 31, the third cut-off plate unit 33A can be disposed correspondingto the third reflecting unit 31, and the third lens unit 34 can bedisposed corresponding to the third reflecting unit 31. In addition, theturning headlight module 3 can include a third optical axis A3, and thethird optical axis A3 can be the optical axis of the third lens unit 34.A fourth predetermined angle θ4 between 30 degrees and 70 degrees isdefined between the normal projection of the third optical axis A3 onthe horizontal plane SH and the normal projection of the main opticalaxis A4 on the horizontal plane SH, or is defined between the normalprojection of the third optical axis A3 on the horizontal plane SH andthe normal projection of the vertical plane SV on the horizontal planeSH.

Preferably, the fourth predetermined angle θ4 can be between 40 degreesand 60 degrees, and in the present disclosure, the fourth predeterminedangle θ4 between the normal projection of the third optical axis A3 onthe horizontal plane SH and the normal projection of the vertical planeSV on the horizontal plane SH is 50 degrees as an exemplary description.It should be noted that, in order to better explain the figure, thefourth predetermined angle θ4 between the normal projection of the thirdoptical axis A3 on the horizontal plane SH and the normal projection ofthe main optical axis A4 on the horizontal plane SH or between thenormal projection of the third optical axis A3 on the horizontal planeSH and normal projection of the vertical plane SV on the horizontalplane SH is marked with a line segment parallel to the main optical axisA4 or the vertical plane SV. For instance, the third reflecting unit 31can be a reflecting surface having an elliptic curvature, and the thirdlighting unit 32 can, but is not limited thereto, be a light emittingdiode (LED) or a light emitting diode package structure (LED packagestructure).

As shown in FIG. 4, according to the first embodiment of the presentdisclosure, the turning headlight module 3 in the left headlight of theleft-hand drive car can be turned left relative to the main headlightmodule 4, so that the fourth predetermined angle θ4 between the thirdoptical axis A3 of the turning headlight module 3 and the main opticalaxis A4 is provided, thereby generating a light pattern as shown in FIG.42. Further, when the main headlight module 4 and the turning headlightmodule 3 are lit at the same time, the light patterns shown in FIG. 43can be generated. In other words, it can be observed by comparing FIG.43 and FIG. 14 that when the main headlight module 4 and the turningheadlight module 3 are lit at the same time, the lighting range in theleft can be increased. It is worth mentioning that, the normalprojection of the third optical axis A3 of the turning headlight module3 on the vertical plane SV and the normal projection of the main opticalaxis A4 on the vertical plane SV are parallel to each other. Therefore,in this embodiment, the turning headlight module 3 is only turned to theleft relative to the main headlight module 4, so that the lightingdirection of the turning headlight module 3 is at the front left of theleft-hand drive car, and the extension direction of the third opticalaxis A3 is toward the front left side, that is, the extension directionof the third optical axis A3 is extended toward the front leftcorresponds to the main optical axis A4. Referring to FIG. 38, the thirdreflecting unit 31 can include a first focal point 31 a and a secondfocal point 21 b corresponding to the first focal point 31 a of thethird reflecting unit 31. In other words, the third reflecting unit 31can include a reflecting surface with an elliptical curvature. Inaddition, the third lighting unit 32 can correspond to the first focalpoint 31 a of the third reflecting unit 31, and the third lens unit 34can include a third lens focal point 34 a. The third lens focal point 34a of the third lens unit 34 corresponds to the second focal point 31 bof the third reflecting unit 31 and is located on the third optical axisA3. For instance, the third lighting unit 32 can be disposed on thefirst focal point 31 a of the third reflecting unit 31, and the thirdlens focal point 34 a and the second focal point 31 b of the thirdreflecting unit 31 can, but not being limited to, overlap with eachother. For instance, the present disclosure uses the diameter of thethird lens unit 34 as 26 mm as an exemplary description, but is notlimited thereto.

Referring to FIG. 38, which is to be read in conjunction with FIG. 39 toFIG. 40, the third cut-off plate unit 33A is a cut-off plate forgenerating a cut-off line to produce a light pattern that complies withregulations. The third cut-off plate unit 33A can include a third frontcut-off edge 33 a, a third rear cut-off edge 33 b, and a third top sidesurface 33 c. Further, the third front cut-off edge 33 a and the thirdrear cut-off edge 33 b are disposed corresponding to each other, and thethird top side surface 33 c is connected between the third front cut-offedge 33 a and the third rear cut-off edge 33 b. Furthermore, the secondfocal point 31 b of the third reflecting unit 31 can preferably belocated on the third front cut-off edge 33 a, but is not limitedthereto.

Referring to FIG. 38, in order to prevent the third rear cut-off edge 33b of the third cut-off plate unit 33A from blocking the lighttransmitted to the second focal point 31 b of the third reflecting unit31, a third predetermined inclined angle α3 between 20 degrees and 70degrees between the third top side surface 33 c and the third opticalaxis A3 is provided, and the present disclosure uses the thirdpredetermined inclined angle α3 as 45 degrees as an exemplarydescription. That is, in the embodiment of FIG. 38, the third cut-offplate unit 33A can be inclined. However, it should be noted that, asshown in FIG. 41, in the embodiment of FIG. 41, the third cut-off plateunit 33A can also be placed upright, and providing a predeterminedinclined angle α3 between 20 degrees and 70 degrees between the thirdtop side surface 33 c and the third optical axis A3. It is worthmentioning that, the third front cut-off edge 33 a of the turningheadlight module 3 is a flush edge.

It should be noted that, although the bending headlight module 1,high-speed headlight module 2, and turning headlight module 3 of thepresent disclosure describe various elements with terms such as “first”,“second”, and “third”, the above terms are only used to distinguishdifferent headlight modules.

Second Embodiment

Referring to FIG. 44 to FIG. 48, a second embodiment of the presentdisclosure provides a headlight device U and a bending headlight module1 thereof. In the following, the main structure of the headlight deviceU will be described first, and the detailed structure of each headlightmodule of the headlight device U will be described. For instance, theheadlight device U can include a main headlight module 4, a bendingheadlight module 1, a high-speed headlight module 2 and/or a turningheadlight module 3, so as to select the relative headlight moduleaccording to the requirements of the lighting mode. The main headlightmodule 4 is capable of generating a first lighting area which is a lightpattern that complies with the regulations of low beam headlamps. Inother embodiments, the main headlight module 4 is also capable ofgenerating a second lighting area which is a light pattern that complieswith the regulations of low beam headlamps. In other words, mainheadlight module 4 is the headlight of the car.

It is worth mentioning that, the difference between the secondembodiment and the first embodiment of the present disclosure is that aheadlight device U provided by the second embodiment of the presentdisclosure is preferably applicable to the right headlight on aleft-hand drive car, but is not limited to thereto. It should be notedthat, the structure of the headlight device U shown in FIG. 44 to FIG.48 are exemplary illustrations of the right headlight applied to theleft-hand drive car. The following will firstly illustrate the structureof the bending headlight module 1, the high-speed headlight module 2,and the turning headlight module 3 when applied to the right headlightof left-hand drive car. The bending headlight module 1, high-speedheadlight module 2, and/or turning headlight module 3 can be disposedadjacent to the main headlight module 4. It should be noted that, the“disposed adjacent to the main headlight module 4” described hererepresents that the bending headlight module 1, the high-speed headlightmodule 2, and/or the turning headlight module 3 are only required to beset adjacent to the main headlight module 4, and is not limited to beplaced on the upper side, the lower side, or the left and right sides ofthe main headlight module 4. It should be noted that, the main headlightmodule 4 provided by the first embodiment of the present disclosure canalso be applied to the right headlight of the left-hand drive car in thesecond embodiment, therefore, the structure of the main headlight module4 will not be reiterated herein. In other words, in the secondembodiment, the main headlight module 4 can be any kind of lightstructure that can produce a light type that complies with theregulations of low beam headlamps. In addition, the main headlightmodule 4 includes a main optical axis A4, and the main headlight module4 defines a horizontal plane SH and a vertical plane SV perpendicular tothe horizontal plane SH, and the main optical axis A4 is parallel to thehorizontal plane SH and the vertical plane SV. Further, for instance,the main optical axis A4 can be a line segment at the intersection ofthe horizontal plane SH and the vertical plane SV, but is not limitedthereto. Furthermore, it should be noted that, the horizontal plane SHand the vertical plane SV of the present disclosure are respectivelyvirtual planes, which are mainly used to explain the configurationrelationship of other vehicle headlight modules relative to the mainheadlight module 4.

Referring to FIG. 44 to FIG. 48, which are to be read in conjunctionwith FIG. 49 to FIG. 54, the following will first describe the structurewhen the structure of the bending headlight module 1 of the rightheadlight on the left-hand drive car. Specifically speaking, the bendingheadlight module 1 can be disposed adjacent to the main headlight module4, and the bending headlight module 1 can include a first reflectingunit 11, a first lighting unit 12, a first cut-off plate unit 13B, and afirst lens unit 14. Further, it can be observed by comparing FIGS. 49 to54 and FIGS. 15 to 21 that, the difference between the bending headlightmodule 1 provided in the second embodiment and the bending headlightmodule 1 provided in the first embodiment is that the form of the firstcut-off plate unit 13B of the bending headlight module 1 provided in thesecond embodiment, and the arrangement position of the bending headlightmodule 1 related to the main headlight module 4 is different from thatof the first embodiment. Therefore, other structures of the bendingheadlight module 1 are similar to those of the first embodiment, andwill not be reiterated herein.

The first lighting unit 12 can be disposed corresponding to the firstreflecting unit 11, the first cut-off plate unit 13A can be disposedcorresponding to the first reflecting unit 11, and the first lens unit14 can be disposed corresponding to the first reflecting unit 11. Thebending headlight module 1 can include a first optical axis A1, and afirst predetermined angle θ1 between 7 degrees and 15 degrees is definedbetween the normal projection of the first optical axis A1 on thehorizontal plane SH and the normal projection of the main optical axisA4 on the horizontal plane SH, or is defined between the normalprojection of the first optical axis A1 on the horizontal plane SH andthe normal projection of the vertical plane SV on the horizontal planeSH. Preferably, the first predetermined angle θ1 can be between 8degrees and 14 degrees, and more preferably, the first predeterminedangle θ1 can be between 9 degrees and 13 degrees. In the presentdisclosure, the first predetermined angle θ1 between the normalprojection of the first optical axis A1 on the horizontal plane SH andthe normal projection of the vertical plane SV on the horizontal planeSH is 11.3 degrees as an exemplary description.

It should be noted that, according to the second embodiment of thepresent disclosure, the bending headlight module 1 in the rightheadlight of the left-hand drive car can be turned right relative to themain headlight module 4, so that the first predetermined angle θ1between the first optical axis A1 of the bending headlight module 1 andthe main optical axis A4 or between the first optical axis A1 of thebending headlight module 1 and the vertical plane SV is provided,thereby generating a light pattern as shown in FIG. 55. Further, whenthe main headlight module 4 and the bending headlight module 1 are litat the same time, the light patterns shown in FIG. 56 can be generated.In other words, it can be observed by comparing FIG. 56 and FIG. 14that, when the main headlight module 4 and the bending headlight module1 are lit at the same time, the lighting range in the front right can beincreased.

It is worth mentioning that, the normal projection of the first opticalaxis A1 of the bending headlight module 1 on the vertical plane SV andthe normal projection of the main optical axis A4 on the vertical planeSV are parallel to each other. Therefore, in this embodiment, thebending headlight module 1 is turned to the right only relative to themain headlight module 4, so that the lighting direction of the bendingheadlight module 1 is toward the front right side of the left-hand drivecar, and the extension direction of the first optical axis A1 is towardthe front right side, that is, the extension direction of the firstoptical axis A1 is extended toward the front right corresponding to themain optical axis A4.

Referring to FIG. 51 to FIG. 54, the first cut-off plate unit 13B caninclude a first cut-off plate body 131, a second cut-off plate body 132,a cut-off plate turning part 133 connected between the first cut-offplate body 131 and the second cut-off plate body 132, a first frontcut-off edge 13 a, a first rear cut-off edge 13 b, and a first top sidesurface 13 c. In addition, the first front cut-off edge 13 a can beformed on the first cut-off plate body 131, the second cut-off platebody 132, and the cut-off plate turning part 133, and the first rearcut-off edge 13 b can be formed on the first cut-off plate body 131, thesecond cut-off plate body 132, and the cut-off plate turning part 133.Further, the first front cut-off edge 13 a and the first rear cut-offedge 13 b are disposed corresponding to each other, and the first topside surface 13 c is connected between the first front cut-off edge 13 aand the first rear cut-off edge 13 b. Furthermore, the second focalpoint 11 b of the first reflecting unit 11 can preferably be located onthe first front cut-off edge 13 a, but is not limited thereto.

More specifically, the first top side surface 13 c on the cut-off plateturning part 133 is an inclined plane and the first top side surface 13c on the cut-off plate turning part 133 is tilted toward the directionfrom the second cut-off plate body 132 to the first cut-off plate body131, and a first predetermined included angle β1 between 120 degrees and170 degrees is defined between the first top side surface 13 c on thecut-off plate turning part 133 and the first top side surface 13 c onthe second cut-off plate body 132. In the present disclosure, the firstpredetermined included angle β1 is 165 degrees as an exemplarydescription. In addition, a first predetermined distance D1 between 0.1mm and 0.5 mm is provided between the first top side surface 13 c on thefirst cut-off plate body 131 and the first top side surface 13 c on thesecond cut-off plate body 132. Preferably, the first predetermineddistance D1 can be between 0.2 mm and 0.4 mm, and the present disclosureuses the first predetermined distance D1 as 0.275 mm as an exemplarydescription. Further, a second predetermined distance D2 is providedbetween the first optical axis A1 and an edge of the cut-off plateturning part 133 that is adjacent to the first optical axis A1, the sizeof the second predetermined distance D2 is between 3 times and 14 timesthe size of the first predetermined distance D1. For instance, thesecond predetermined distance D2 can be between 1 mm and 3.8 mm.Preferably, the second predetermined distance D2 can be between 1.4 mmand 3.4 mm. The present disclosure uses the second predetermineddistance D2 as 2.4 mm as an exemplary description. It is worthmentioning that, preferably, the first predetermined distance D1 of thefirst cut-off plate unit 13B provided in the second embodiment issmaller than the first predetermined distance D1 of the first cut-offplate unit 13A provided in the first embodiment.

Referring to FIG. 47 and FIG. 53, a part of the first cut-off plate body131 of the first cut-off plate unit 13B on a first side of the firstoptical axis A1, the other part of the first cut-off plate body 131, thecut-off plate turning part 133, and the second cut-off plate body 132 ofthe first cut-off plate unit 13B are located on a second side of thefirst optical axis A1, and the first side and the second side arerespectively on opposite sides of the first optical axis A1. Forinstance, as shown in FIG. 47 and FIG. 53, the first side of the firstoptical axis A1 can be the left side of the first optical axis A1, andthe second side of the first optical axis A1 can be the right side ofthe first optical axis A1. Further, in the effective shading range ofthe first cut-off plate unit 13B, a first predetermined width W1 of thefirst cut-off plate body 131 can be larger than a second predeterminedwidth W2 of the second cut-off plate body 132. It should be noted that,the effective shading range described above is the range that the firstcut-off plate unit 13B can block light.

Referring to FIG. 51, in order to prevent the first rear cut-off edge 13b of the first cut-off plate unit 13B from blocking the lighttransmitted to the second focal point 11 b of the first reflecting unit11, the first cut-off plate unit 13B can be inclined. However, it shouldbe noted that, the first cut-off plate unit 13B can also be placedupright as described in the first embodiment, and providing a firstpredetermined inclined angle α1 between 20 degrees and 70 degreesbetween the first top side surface 13 c and the first optical axis A1,and the present disclosure uses the first predetermined inclined angleα1 as 45 degrees as an exemplary description.

Referring to FIG. 44 to FIG. 48, which are to be read in conjunctionwith FIG. 57 to FIG. 63, the following will first describe the structurewhen the headlight device U is applied to the structure of thehigh-speed headlight module 2 of the right headlight on the left-handdrive car. Specifically speaking, the high-speed headlight module 2 canbe disposed adjacent to the main headlight module 4, and high-speedheadlight module 2 can include a second reflecting unit 21, a secondlighting unit 22, a second cut-off plate unit 23A, and a second lensunit 24.

Further, it can be observed by comparing FIGS. 57 to 63 and FIGS. 25 to32 that, the difference between the high-speed headlight module 2provided in the second embodiment and the high-speed headlight module 2provided in the first embodiment is that the form of the second cut-offplate unit 23B of the high-speed headlight module 2 provided in thesecond embodiment, is different from the second cut-off plate unit 23Aof the high-speed headlight module 2 provided in the first embodiment.Therefore, other structures of the high-speed headlight module 2 aresimilar to those of the first embodiment, and will not be reiteratedherein. For instance, the high-speed headlight module 2 of the headlightdevice U of the second embodiment can be mainly used to generate a lightmode of a high-speed road lighting mode 3 (E3 mode), but is not limitedthereto. For instance, when the high-speed road lighting mode 3 (E3mode) is required, the high-speed headlight module 2 provided in thesecond embodiment can be turned on, when the high-speed road lightingmode 2 (E2 mode) is required, the high-speed headlight module 2 providedin the first embodiment can be turned on, and when a high-speed roadlighting mode 1 (E1 mode) is required, the high-speed headlight module 2provided in the first embodiment and the high-speed headlight module 2provided in the second embodiment can be turned on at the same time, butthe present disclosure is not limited thereto.

The second lighting unit 22 can be disposed corresponding to the secondreflecting unit 21, the second cut-off plate unit 23B can be disposedcorresponding to the second reflecting unit 21, and the second lens unit24 can be disposed corresponding to the second reflecting unit 21. Thehigh-speed headlight module 2 can include a second optical axis A2, andthe second optical axis A2 can be the optical axis of the second lensunit 24. A second predetermined angle θ2 between 0.9 degrees and 2.1degrees is defined between the normal projection of the second opticalaxis A2 on the horizontal plane SH and the normal projection of the mainoptical axis A4 on the horizontal plane SH, or is defined between thenormal projection of the second optical axis A2 on the horizontal planeSH and the normal projection of the vertical plane SV on the horizontalplane SH. In addition, a third predetermined angle θ3 between 0.2degrees and 0.57 degrees is defined between the normal projection of thesecond optical axis A2 on the vertical plane SV and the normalprojection of the main optical axis A4 on the vertical plane SV, or isdefined between the normal projection of the second optical axis A2 onthe vertical plane SV and the normal projection of the horizontal planeSH on the vertical plane SV. Preferably, the second predetermined angleθ2 can be between 1.2 degrees and 1.8 degrees, and the thirdpredetermined angle θ3 can be between 0.3 degrees and 0.5 degrees. Inthe present disclosure, the second predetermined angle θ2 between thenormal projection of the second optical axis A2 on the horizontal planeSH and the normal projection of the vertical plane SV on the horizontalplane SH is 1.5 degrees, and the third predetermined angle θ3 betweenthe normal projection of the second optical axis A2 on the verticalplane SV and the normal projection of the horizontal plane SH on thevertical plane SV is 0.3 degrees as an exemplary description.

It should be noted that, according to the second embodiment of thepresent disclosure, the high-speed headlight module 2 in the rightheadlight of the left-hand drive car can be relatively rotated leftwardand downward to the main headlight module 4 to form the secondpredetermined angle θ2 and the third predetermined angle θ3 that resultsin a light pattern as shown in FIG. 64. Further, when the main headlightmodule 4 and the high-speed headlight module 2 are lit at the same time,the light patterns shown in FIG. 65 can be generated. In other words, itcan be observed by comparing FIG. 65 and FIG. 14 that the lightingdistance can be increased when the main headlight module 4 and thehigh-speed headlight module 2 are lit at the same time.

In addition, it is worth mentioning that, in this embodiment, thehigh-speed headlight module 2 is only rotated leftward and downwardrelatively to the main headlight module 4, so that the lightingdirection of the high-speed headlight module 2 is left-hand drive carfront left and diagonally down, that is, the extension direction of thesecond optical axis A2 is the left front lower part of the left-handdrive car, and the extension direction of the second optical axis A2 isthe front left lower part relative to the main optical axis A4. In otherwords, the angle of the second optical axis A2 of the high-speedheadlight module 2 of the second embodiment corresponds to the mainoptical axis A4 can be the same as the angle of the second optical axisA2 of the high-speed headlight module 2 of the first embodiment withrespect to the main optical axis A4.

Referring to FIGS. 57 to 63, the second cut-off plate unit 23B caninclude a first cut-off plate body 231, a second cut-off plate body 232,a cut-off plate turning part 233 connected between the first cut-offplate body 231 and the second cut-off plate body 232, a second frontcut-off edge 23 a, a second rear cut-off edge 23 b, and a second topside surface 23 c. In addition, the second front cut-off edge 23 a isformed on the first cut-off plate body 231, the second cut-off platebody 232, and the cut-off plate turning part 233, and the second rearcut-off edge 23 b can be formed on the first cut-off plate body 231, thesecond cut-off plate body 232 and the cut-off plate turning part 233.Further, the second front cut-off edge 23 a and the second rear cut-offedge 23 b are disposed corresponding to each other, and the second topside surface 23 c is connected between the second front cut-off edge 23a and the second rear cut-off edge 23 b. Furthermore, the second focalpoint 21 b of the second reflecting unit 21 can preferably be located onthe second front cut-off edge 23 a, but is not limited thereto.

More specifically, the second top side surface 23 c on the cut-off plateturning part 233 is an inclined plane and the second top side surface 23c on the cut-off plate turning part 233 is tilted toward the directionfrom the second cut-off plate body 232 to the first cut-off plate body231, and a second predetermined included angle β2 between 140 degreesand 160 degrees is defined between the second top side surface 23 c onthe cut-off plate turning part 233 and the second top side surface 23 con the second cut-off plate body 232. In the present disclosure, thesecond predetermined included angle β2 is 150 degrees as an exemplarydescription. In addition, a first predetermined distance D1 between 0.02mm and 0.3 mm is provided between the first top side surface 23 c on thefirst cut-off plate body 231 and the first top side surface 23 c on thesecond cut-off plate body 232. Preferably, the first predetermineddistance D1 can be between 0.05 mm and 0.2 mm, and the presentdisclosure uses the first predetermined distance D1 as 0.1 mm as anexemplary description. Further, a second predetermined distance D2 isprovided between the second optical axis A2 and an edge of the cut-offplate turning part 233 that is adjacent to the second optical axis A2,the size of the second predetermined distance D2 is between 1 times and12 times the size of the first predetermined distance D1. For instance,the second predetermined distance D2 can be between 0.1 mm and 1.2 mm.Preferably, the second predetermined distance D2 can be between 0.3 mmand 1 mm, the second predetermined distance D2 is 0.6 mm as an exemplarydescription.

Referring to FIG. 47 and FIG. 61, the first cut-off plate body 231 ofthe second cut-off plate unit 23B and the cut-off plate turning part 233of the second cut-off plate unit 23B are located at a first side of thesecond optical axis A2, and the second cut-off plate body 232 of thesecond cut-off plate unit 23B is located at a second side of the secondoptical axis A2, and the first side and the second side are respectivelylocated on two opposite sides of the second optical axis A2. Forinstance, as shown in FIG. 47 and FIG. 61, the first side of the secondoptical axis A2 can be the left side of the second optical axis A2, andthe second side of the second optical axis A2 can be the right side ofthe second optical axis A2. Further, in the effective shading range ofthe second cut-off plate unit 23B, a first predetermined width W1 of thefirst cut-off plate body 231 of the second cut-off plate unit 23 B issmaller than a second predetermined width W2 of the second cut-off platebody 232 of the second cut-off plate unit 23 B. It should be noted that,the effective shading range described above is the range that the secondcut-off plate unit 23 B can block light.

Referring to FIG. 62, the inclined plane on the cut-off plate turningpart 233 of the second cut-off plate unit 23B extends from the secondcut-off plate body 232 of the second cut-off plate unit 23B to the firstcut-off plate body 231 of the second cut-off plate unit 23B, so as toform a groove structure G opposite to the first cut-off plate body 231of the second cut-off plate unit 23B and second cut-off plate body 232of the second cut-off plate unit 23B.

Referring to FIG. 58 and FIG. 59, in order to prevent the second rearcut-off edge 23 b of the second cut-off plate unit 23B from blocking thelight transmitted to the second focal point 21 b of the secondreflecting unit 21, the second cut-off plate unit 23B can be inclined.However, it should be noted that, as shown in FIG. 22, in theembodiments, the second cut-off plate unit 23B can be placed upright asdescribed in the first embodiment, a second predetermined inclined angleα2 between 20 degrees and 70 degrees between the second top side surface23 c and the second optical axis A2 can also be provided, and thepresent disclosure uses the second predetermined inclined angle α2 as 45degrees as an exemplary description.

Referring to FIG. 44 to FIG. 48, which are to be read in conjunctionwith FIG. 66, the following will describe the structure when theheadlight device U is applied to the structure of the turning headlightmodule 3 of the right headlight on the left-hand drive car. Specificallyspeaking, the turning headlight module 3 can be disposed adjacent to themain headlight module 4, and the turning headlight module 3 can includea third reflecting unit 31, a third lighting unit 32, a third cut-offplate unit 33A, and a third lens unit 34.

Further, it can be observed by comparing FIGS. 44 to 48 and 66 and FIGS.1 to 5 and 36 that, the difference between the turning headlight module3 provided in the second embodiment and the turning headlight module 3provided in the first embodiment is that the arrangement position of theturning headlight module 3 related to the main headlight module 4 isdifferent from that of the first embodiment. Therefore, other structuresof the turning headlight module 3 are similar to those of the firstembodiment, and will not be reiterated herein. The third lighting unit32 can be disposed corresponding to the third reflecting unit 31, thethird cut-off plate unit 33A can be disposed corresponding to the thirdreflecting unit 31, and the third lens unit 34 can be disposedcorresponding to the third reflecting unit 31. In addition, the turningheadlight module 3 can include a third optical axis A3, and a fourthpredetermined angle θ4 between 30 degrees and 70 degrees is definedbetween the normal projection of the third optical axis A3 on thehorizontal plane SH and the normal projection of the main optical axisA4 on the horizontal plane SH, or is defined between the normalprojection of the third optical axis A3 on the horizontal plane SH andthe normal projection of the vertical plane SV on the horizontal planeSH. Preferably, the fourth predetermined angle θ4 can be between 40degrees and 60 degrees, and in the present disclosure, the fourthpredetermined angle θ4 between the normal projection of the thirdoptical axis A3 on the horizontal plane SH and the normal projection ofthe vertical plane SV on the horizontal plane SH is 50 degrees as anexemplary description.

It should be noted that, according to the second embodiment of thepresent disclosure, the turning headlight module 3 in the rightheadlight of the left-hand drive car can be turned right relative to themain headlight module 4, so that the fourth predetermined angle θ4between the third optical axis A3 of the turning headlight module 3 andthe main optical axis A4 is provided, thereby generating a light patternas shown in FIG. 67. Further, when the main headlight module 4 and theturning headlight module 3 are lit at the same time, the light patternsshown in FIG. 68 can be generated. In other words, it can be observed bycomparing FIG. 68 and FIG. 14 that when the main headlight module 4 andthe turning headlight module 3 are lit at the same time, the lightingrange in the right can be increased.

It is worth mentioning that, the normal projection of the third opticalaxis A3 of the turning headlight module 3 on the vertical plane SV andthe normal projection of the main optical axis A4 on the vertical planeSV are parallel to each other. That is, the turning headlight module 3is only turned to the right relative to the main headlight module 4, sothat the lighting direction of the turning headlight module 3 is at thefront right of the left-hand drive car, and the extension direction ofthe third optical axis A3 is toward the front right side, that is, theextension direction of the third optical axis A3 is extended toward thefront right corresponds to the main optical axis A4.

Third Embodiment

Referring to FIG. 69 to FIG. 71, a third embodiment of the presentdisclosure provides a bending headlight module 1 in another embodiment.It can be observed by comparing FIGS. 69 to 71 and FIGS. 15 to 16 that,the difference between the bending headlight module 1 of the thirdembodiment and the bending headlight module 1 of the first embodiment isthe structure of the first reflecting unit 11, the number of the firstlighting units 12, and the structure of the first cut-off plate unit 13Aof the bending headlight module 1 of the third embodiment.

The bending headlight module 1 of the third embodiment can include afirst reflecting unit 11, a first lighting unit 12, a first cut-offplate unit 13A, and a first lens unit 14. The first reflecting unit 11can include a first reflecting element 111 and a second reflecting unit112. The first lighting unit 12 can include a first reflecting element121 and a second reflecting unit 122. The first reflecting element 121can correspond to the first reflecting element 111 and the secondreflecting unit 122 can correspond to the second reflecting unit 112. Inaddition, it is worth mentioning that, the first reflecting element 111,and the second reflecting unit 112 are reflecting surfaces having anelliptical curvature, respectively.

Further, the first reflecting element 111 can include a first reflectingsurface 1111 and a bare reflecting surface 1112, and the secondreflecting unit 112 can include a second reflecting surface 1121. Thebare reflecting surface 1112 is connected between the first reflectingsurface 1111 and the second reflecting surface 1121. Furthermore, thefirst reflecting element 111 and the second reflecting unit 112 arearranged alternately to form a bare reflecting surface 1112, so that thebare reflecting surface 1112 is exposed relative to the secondreflecting surface 1121. Therefore, a setting of the bare reflectingsurface 1112 can increase the lighting range of the bending headlightmodule 1, that is, the setting of the bare reflecting surface 1112 canincrease the light expansion effect of the bending headlight module 1.

Fourth Embodiment

Referring to FIG. 72 to FIG. 75, which provide another configurationmethod of the headlight device U. The headlight device U shown in FIG.72 and FIG. 73 is preferably applicable to the left headlight on theleft-hand drive car, and the headlight device U shown in FIG. 74 andFIG. 75 is preferably applicable to the right headlight on the left-handdrive car.

It can be observed by comparing FIGS. 72 and 73 and FIGS. 1 and 5 and bycomparing FIGS. 74 and 75 and FIGS. 44 and 48 that, the differencebetween the headlight device U provided in the fourth embodiment and thefirst and second embodiments is the arrangement positions of variousvehicle headlight modules of the headlight devices U provided in thefourth embodiment.

The bending headlight module 1, high-speed headlight module 2, and/orturning headlight module 3 can be disposed adjacent to the mainheadlight module 4, and is not limited to be placed on the upper side,the lower side, or the left and right sides of the main headlight module4. Therefore, the position of each headlight module relative to the mainheadlight module 4 can be adjusted according to the allowable space ofthe car. Further, in other embodiments, the bending headlight module 1and/or the high-speed headlight module 2 in the left headlight on theleft-hand drive car in the first embodiment can be disposed in the rightheadlight on the left-hand drive car in the second embodiment.Similarly, the bending headlight module 1 and/or the high-speedheadlight module 2 in the right headlight on the left-hand drive car inthe second embodiment may be disposed in the left headlight on theleft-hand drive car in the first embodiment, but is not limited tothereto.

It is worth mentioning that, although the headlight device U provided inthe embodiment of the present disclosure is applied to a headlight of aleft-hand drive car, the headlight device U provided in the embodimentof the present disclosure can also be applied to a headlight of aright-hand drive vehicle. In addition, the headlight device U applied tothe headlight of the right-hand drive vehicle can be a mirrored symmetrystructure of the structure of the headlight device U provided in theembodiment of the present invention.

Advantages of the Embodiments

One of the effects of the present disclosure is that, the headlightdevice U and its bending headlight module 1 of the present disclosurecan enable the headlight device U to generate the curve lighting mode (Tmode) of the adaptive front-lighting system through the technicalsolution of “a first predetermined angle θ1 between 7 degrees and 15degrees is defined between the normal projection of the first opticalaxis A1 on the horizontal plane SH and the normal projection of the mainoptical axis A4 on the horizontal plane SH or between the normalprojection of the first optical axis A1 on the horizontal plane SH andthe normal projection of the vertical plane SV on the horizontal planeSH”. In addition, the bending headlight module 1 can also make thebending headlight module 1 cooperate with the main headlight module 4 togenerate light patterns that meet specifications and increase thelighting range of the headlight device U through the technical solutionof “the first cut-off plate unit (13A, 13B) includes a first cut-offplate body 131, a second cut-off plate body 132, a cut-off plate turningpart 133 connecting between the first cut-off plate body 131 and thesecond cut-off plate body 132, a cut-off plate protruding part 134protruding from and being disposed corresponding to the first cut-offplate body 131 and being close to the cut-off plate turning part 133, afirst front cut-off edge 13 a, a first rear cut-off edge 13 b, and afirst top side surface 13 c”.

Another one of the effects of the present disclosure is that, theheadlight device U and the high-speed headlight module 2 of the presentdisclosure can enable the headlight device U to generate the high-speedroad lighting mode 1 (E1 mode) or the high-speed road lighting mode 2(E2 mode) of the adaptive front-lighting system through the technicalsolution of “a second predetermined angle θ2 between 0.9 degrees and 2.1degrees is defined between the normal projection of the second opticalaxis A2 on the horizontal plane SH and the normal projection of the mainoptical axis A4 on the horizontal plane SH, or is defined between thenormal projection of the second optical axis A2 on the horizontal planeSH and the normal projection of the vertical plane SV on the horizontalplane SH. In addition, a third predetermined angle θ3 between 0.2degrees and 0.57 degrees is defined between the normal projection of thesecond optical axis A2 on the vertical plane SV and the normalprojection of the main optical axis A4 on the vertical plane SV, or isdefined between the normal projection of the second optical axis A2 onthe vertical plane SV and the normal projection of the horizontal planeSH on the vertical plane SV” In addition, the headlight device and thehigh-speed headlight module can also make the high-speed headlightmodule 2 cooperate with the main headlight module 4 to generate lightpatterns that meet specifications and increase the lighting range of theheadlight device through the technical solution of “the second cut-offplate unit (23A, 23B) includes a first cut-off plate body 231, a secondcut-off plate body 232, a cut-off plate turning part 233 connectingbetween the first cut-off plate body 231 and the second cut-off platebody 232, a second front cut-off edge 23 a, a second rear cut-off edge23 b, and a second top side surface 23 c”.

Further, the lighting timing of the light lighting units (the firstlighting unit 12, the second lighting unit 22, and the third lightingunit 32) of the bending headlight module 1, the high-speed headlightmodule 2, and/or the turning headlight module 3 can be activated by thesystem in the car according to the current state of the car. Forinstance, it can be determined according to the speed or steering angleof the car whether the bending headlight module 1, the high-speedheadlight module 2, and/or the turning headlight module 3 should beactivated. The present disclosure can increase the lighting range of theheadlight device U by using the bending headlight module 1, thehigh-speed headlight module 2, and/or the turning headlight module 3.

In addition, compared with the headlight device with steering functionin the conventional technology, the steering angle must be controlled bythe motor. The headlight device U and the bending headlight module 1provided by the present disclosure can change the light type withoutusing a motor, but by using the cut-off control of the light lightingunits.

The foregoing description of the exemplary embodiments of the disclosurehas been presented only for the purposes of illustration and descriptionand is not intended to be exhaustive or to limit the disclosure to theprecise forms disclosed. Many modifications and variations are possiblein light of the above teaching.

The embodiments were chosen and described in order to explain theprinciples of the disclosure and their practical application so as toenable others skilled in the art to utilize the disclosure and variousembodiments and with various modifications as are suited to theparticular use contemplated. Alternative embodiments will becomeapparent to those skilled in the art to which the present disclosurepertains without departing from its spirit and scope.

What is claimed is:
 1. A headlight device comprising: a main headlight module, which is capable of generating a first lighting area which is a light pattern that complies with regulations of low beam headlamps, wherein the main headlight module includes a main optical axis, and the main headlight module defines a horizontal plane and a vertical plane perpendicular to the horizontal plane, and the main optical axis is parallel to the horizontal plane and the vertical plane; and a bending headlight module, which is disposed close to the main headlight module, wherein the bending headlight module includes a first reflecting unit, a first lighting unit, a first cut-off plate unit, and a first lens unit, the first lighting unit is disposed corresponding to the first reflecting unit, the first cut-off plate unit is disposed corresponding to the first reflecting unit, and the first lens unit is disposed corresponding to the first reflecting unit, and wherein the bending headlight module includes a first optical axis, and a first predetermined angle between 7 degrees and 15 degrees is defined between a normal projection of the first optical axis on the horizontal plane and a normal projection of the main optical axis on the horizontal plane or between the normal projection of the first optical axis on the horizontal plane and a normal projection of the vertical plane on the horizontal plane.
 2. The headlight device according to claim 1, wherein the first reflecting unit includes a first focal point and a second focal point corresponding to the first focal point of the first reflecting unit, wherein the first lighting unit is disposed corresponding to the first focal point of the first reflecting unit, and the first lens unit includes a first lens focal point, and the first lens focal point of the first lens unit is disposed corresponding to the second focal point of the first reflecting unit and is located on the first optical axis.
 3. The headlight device according to claim 1, wherein the first cut-off plate unit includes a first front cut-off edge, a first rear cut-off edge, and a first top side surface, the first front cut-off edge and the first rear cut-off edge are disposed corresponding to each other, and the first top side surface is connected between the first front cut-off edge and the first rear cut-off edge, wherein a first predetermined inclined angle ranging between 20 degrees to 70 degrees is defined between a normal projection of the first top side surface on the vertical plane and the normal projection of the first optical axis on the vertical plane.
 4. The headlight device according to claim 1, wherein the headlight device is a left headlight on a left-hand drive car, a lighting direction of the bending headlight module is toward a front left side of the left-hand drive car, and an extension direction of the first optical axis is toward the front left side of the left-hand drive car.
 5. The headlight device according to claim 4, wherein the first cut-off plate unit includes a first cut-off plate body, a second cut-off plate body, a cut-off plate turning part connected between the first cut-off plate body of the first cut-off plate unit and the second cut-off plate body of the first cut-off plate unit, a cut-off plate protruding part protruding from and being disposed corresponding to the first cut-off plate body of the first cut-off plate unit and being close to the cut-off plate turning part of the first cut-off plate unit, a first front cut-off edge, a first rear cut-off edge, and a first top side surface; wherein the first front cut-off edge is formed on the first cut-off plate body, the second cut-off plate body, the cut-off plate turning part, and the cut-off plate protruding part of the first cut-off plate unit, the first rear cut-off edge is formed on the first cut-off plate body, the second cut-off plate body, the cut-off plate turning part, and the cut-off plate protruding part of the first cut-off plate unit, the first front cut-off edge and the first rear cut-off edge are disposed corresponding to each other, and the first top side surface is connected between the first front cut-off edge and the first rear cut-off edge; wherein the first top side surface on the cut-off plate turning part of the first cut-off plate unit is an inclined plane and the first top side surface on the cut-off plate turning part of the first cut-off plate unit is tilted toward the direction from the first cut-off plate body of the first cut-off plate unit to the second cut-off plate body of the first cut-off plate unit; and wherein a first predetermined distance between 0.1 mm and 0.5 mm is defined between the first top side surface on the first cut-off plate body of the first cut-off plate unit and the first top side surface on the second cut-off plate body of the first cut-off plate unit.
 6. The headlight device according to claim 5, wherein the first cut-off plate body, the cut-off plate turning part, and part of the second cut-off plate body of the first cut-off plate unit are located on a first side of the first optical axis, and another part of the second cut-off plate body of the first cut-off plate unit is located on a second side of the first optical axis, and the first side and the second side are respectively on opposite sides of the first optical axis.
 7. The headlight device according to claim 5, wherein in an effective shading range of the first cut-off plate unit, a first predetermined width of the first cut-off plate body of the first cut-off plate unit is smaller than a second predetermined width of the second cut-off plate body of the first cut-off plate unit.
 8. The headlight device according to claim 5, wherein the inclined plane on the cut-off plate turning part of the first cut-off plate unit extends from the cut-off plate turning part of the first cut-off plate unit to the second cut-off plate body of the first cut-off plate unit, so as to form a groove structure opposite to the cut-off plate protruding part of the first cut-off plate unit and the second cut-off plate body of the first cut-off plate unit.
 9. The headlight device according to claim 5, wherein a first predetermined included angle between 164 degrees and 172 degrees is defined between the first top side surface on the cut-off plate turning part of the first cut-off plate unit and the first top side surface on the second cut-off plate body of the first cut-off plate unit.
 10. The headlight device according to claim 5, wherein a second predetermined distance is defined between the first optical axis and an edge of the cut-off plate turning part that is adjacent to the first optical axis, a size of the second predetermined distance is between 5 times and 11 times of a size of the first predetermined distance.
 11. The headlight device according to claim 5, wherein a predetermined distance between 1.7 mm and 4.7 mm is defined between the first optical axis and an edge of the cut-off plate protruding part of the first cut-off plate unit that is adjacent to the first optical axis.
 12. The headlight device according to claim 1, wherein the headlight device is a right headlight on a left-hand drive car, a lighting direction of the bending headlight module is toward a front right side of the left-hand drive car, and an extension direction of the first optical axis is toward the front right side of the left-hand drive car.
 13. The headlight device according to claim 12, wherein the first cut-off plate unit includes a first cut-off plate body, a second cut-off plate body, a cut-off plate turning part being connected between the first cut-off plate body of the first cut-off plate unit and the second cut-off plate body of the first cut-off plate unit, a first front cut-off edge, a first rear cut-off edge, and a first top side surface; wherein the first front cut-off edge is formed on the first cut-off plate body, the second cut-off plate body, and the cut-off plate turning part of the first cut-off plate unit, the first rear cut-off edge is formed on the first cut-off plate body, the second cut-off plate body, and the cut-off plate turning part of the first cut-off plate unit, the first front cut-off edge and the first rear cut-off edge are disposed corresponding to each other, and the first top side surface is connected between the first front cut-off edge and the first rear cut-off edge; wherein the first top side surface on the cut-off plate turning part of the first cut-off plate unit is an inclined plane, and the first top side surface on the cut-off plate turning part of the first cut-off plate unit is tilted towards the direction from the second cut-off plate body of the first cut-off plate unit to the first cut-off plate body of the first cut-off plate unit; wherein a first predetermined distance between 0.1 mm and 0.5 mm is defined between the first top side surface on the first cut-off plate body of the first cut-off plate unit and the first top side surface on the second cut-off plate body of the first cut-off plate unit.
 14. The headlight device according to claim 13, wherein the first cut-off plate body part of the first cut-off plate unit is located on a first side of the first optical axis, another part of the first cut-off plate body of the first cut-off plate unit, the cut-off plate turning part and the second cut-off plate body are located on a second side of the first optical axis, and the first side and the second side are respectively on opposite sides of the first optical axis.
 15. The headlight device according to claim 13, wherein in an effective shading range of the first cut-off plate unit, a first predetermined width of the first cut-off plate body of the first cut-off plate unit is greater than a second predetermined width of the second cut-off plate body of the first cut-off plate unit.
 16. The headlight device according to claim 13, wherein a first predetermined included angle between 160 degrees and 172 degrees is defined between the first top side surface on the cut-off plate turning part of the first cut-off plate unit and the first top side surface on the first cut-off plate body of the first cut-off plate unit.
 17. The headlight device according to claim 13, wherein a second predetermined distance is defined between the first optical axis and an edge of the cut-off plate turning part that is adjacent to the first optical axis, a size of the second predetermined distance is between 3 times and 14 times of a size of the first predetermined distance.
 18. The headlight device according to claim 1, further comprising a high-speed headlight module being disposed close to the main headlight module, wherein the high-speed headlight module includes a second reflecting unit, a second lighting unit, a second cut-off plate unit, and a second lens unit; wherein the second lighting unit is disposed corresponding to the second reflecting unit, the second cut-off plate unit is disposed corresponding to the second reflecting unit, and the second lens unit is disposed corresponding to the second reflecting unit, wherein the high-speed headlight module includes a second optical axis, a second predetermined angle between 0.9 degrees and 2.1 degrees is defined between a normal projection of the second optical axis on the horizontal plane and the normal projection of the main optical axis on the horizontal plane or is defined between the normal projection of the second optical axis on the horizontal plane and the normal projection of the vertical plane on the horizontal plane, and a third predetermined angle between 0.2 degrees and 0.57 degrees is defined between the normal projection of the second optical axis on the vertical plane and the normal projection of the main optical axis on the vertical plane or is defined between the normal projection of the second optical axis on the vertical plane and a normal projection of the horizontal plane on the vertical plane.
 19. The headlight device according to claim 18, wherein the second reflecting unit includes a first focal point and a second focal point corresponding to the first focal point of the second reflecting unit, the second lighting unit is disposed corresponding to the first focal point of the second reflecting unit, and the second lens unit includes a first lens focal point, the first lens focal point of the second lens unit corresponding to the second focal point of the second reflecting unit and is located on the second optical axis.
 20. The headlight device according to claim 18, wherein the second cut-off plate unit includes a second front cut-off edge, a second rear cut-off edge, and second top side surface, the second front cut-off edge and the second rear cut-off edge are disposed corresponding to each other, and the second top side surface is connected between the second front cut-off edge and the second rear cut-off edge, wherein a second predetermined inclined angle between 20 degrees and 70 degrees is defined between the second top side surface and the normal projection of the second optical axis on the vertical plane.
 21. The headlight device according to claim 18, wherein the headlight device is a left headlight on a left-hand drive car, a lighting direction of the bending headlight module is toward a front left side and obliquely downward of the left-hand drive car, and an extension direction of the second optical axis is toward the front left side and obliquely downward of the left-hand drive car.
 22. The headlight device according to claim 21, wherein the second cut-off plate unit includes a first cut-off plate body, a second cut-off plate body, the second cut-off plate unit includes a first cut-off plate body, a second cut-off plate body, a cut-off plate turning part connected between the first cut-off plate body of the second cut-off plate unit and the second cut-off plate body of the second cut-off plate unit, a second front cut-off edge, a second rear cut-off edge, and second top side surface; wherein the second front cut-off edge is formed on the first cut-off plate body of the second cut-off plate unit, the second cut-off plate body, the cut-off plate turning part, the second rear cut-off edge is formed on the first cut-off plate body of the second cut-off plate unit, the second cut-off plate body and the cut-off plate turning part, and the second front cut-off edge and the second rear cut-off edge are disposed corresponding to each other and the second top side surface is connected between the second front cut-off edge and the second rear cut-off edge; wherein the second top side surface on the cut-off plate turning part of the second cut-off plate unit is an incident plane, and the second top side surface on the cut-off plate turning part of the second cut-off plate unit is tilted towards the direction from the second cut-off plate body of the second cut-off plate unit to the first cut-off plate body of the second cut-off plate unit, and wherein a first predetermined distance between 0.02 mm and 0.3 mm is defined between the first top side surface on the first cut-off plate body of the second cut-off plate unit and the first top side surface on the second cut-off plate body of the second cut-off plate unit.
 23. The headlight device according to claim 22, wherein the first cut-off plate body of the second cut-off plate unit and the cut-off plate turning part of the second cut-off plate unit is located on a first side of the second optical axis, the second cut-off plate body of the second cut-off plate unit is located on a second side of the second optical axis, and the first side and the second side are respectively on opposite sides of the second optical axis.
 24. The headlight device according to claim 22, wherein in an effective shading range of the second cut-off plate unit, a first predetermined width of the first cut-off plate body of the second cut-off plate unit is smaller than a second predetermined width of the second cut-off plate body of the second cut-off plate unit.
 25. The headlight device according to claim 22, wherein an inclined plane on the cut-off plate turning part of the second cut-off plate unit extends from the second cut-off plate body of the second cut-off plate unit to the first cut-off plate body of the second cut-off plate unit and is able to form a groove opposite to the first cut-off plate body of the second cut-off plate unit and the second cut-off plate body of the second cut-off plate unit.
 26. The headlight device according to claim 22, wherein a second predetermined included angle between 140 degrees and 160 degrees is defined between the second top side surface on the cut-off plate turning part of the second cut-off plate unit and the second top side surface on the first cut-off plate body of the second cut-off plate unit.
 27. The headlight device according to claim 22, wherein a second predetermined distance is defined between the second optical axis and an edge of the cut-off plate turning part of the second cut-off plate unit that is adjacent to the second optical axis, and a size of the second predetermined distance is between 2.2 times and 4.6 times of a size of the first predetermined distance.
 28. The headlight device according to claim 18, wherein the headlight device is the right headlight on a left-hand drive car, a lighting direction of the high-speed headlight module is toward a front left side and obliquely downward of the left-hand drive car, and an extension direction of the second optical axis is toward the front left side and obliquely downward of the left-hand drive car.
 29. The headlight device according to claim 28, wherein the second cut-off plate unit includes a first cut-off plate body, a second cut-off plate body, the second cut-off plate unit includes a first cut-off plate body, a second cut-off plate body, a cut-off plate turning part connected between the first cut-off plate body of the second cut-off plate unit and the second cut-off plate body of the second cut-off plate unit, a second front cut-off edge, a second rear cut-off edge, and second top side surface; wherein the second front cut-off edge is formed on the first cut-off plate body of the second cut-off plate unit, the second cut-off plate body, the cut-off plate turning part, the second rear cut-off edge is formed on the first cut-off plate body of the second cut-off plate unit, the second cut-off plate body and the cut-off plate turning part, and the second front cut-off edge and the second rear cut-off edge are disposed corresponding to each other and the second top side surface is connected between the second front cut-off edge and the second rear cut-off edge; wherein the second top side surface on the cut-off plate turning part of the second cut-off plate unit is an incident plane, and the second top side surface on the cut-off plate turning part of the second cut-off plate unit is tilted towards the direction from the second cut-off plate body of the second cut-off plate unit to the first cut-off plate body of the second cut-off plate unit, and wherein a first predetermined distance between 0.02 mm and 0.3 mm is defined between the second top side surface on the first cut-off plate body of the second cut-off plate unit and the second top side surface on the second cut-off plate body of the second cut-off plate unit.
 30. The headlight device according to claim 29, wherein a second predetermined distance is defined between the second optical axis and an edge of the cut-off plate turning part of the second cut-off plate unit that is adjacent to the second optical axis, and a size of the second predetermined distance is between 1 times and 12 times of a size of the first predetermined distance.
 31. The headlight device according to claim 1, further comprising a turning headlight module being disposed close to the main headlight module, wherein the turning headlight module includes a third reflecting unit, a third lighting unit, a third cut-off plate unit, and a third lens unit; wherein the third lighting unit is disposed corresponding to the third reflecting unit, the third cut-off plate unit is disposed corresponding to the third reflecting unit, and the third lens unit is disposed corresponding to the third reflecting unit, wherein the turning headlight module includes a third optical axis, and a fourth predetermined angle between 30 degrees and 70 degrees is defined between a normal projection of the third optical axis on the horizontal plane and the normal projection of the main optical axis on the horizontal plane or is defined between the normal projection of the third optical axis on the horizontal plane and the normal projection of the vertical plane on the horizontal plane.
 32. The headlight device according to claim 31, wherein the third reflecting unit includes a first focal point and a second focal point corresponding to the first focal point of the third reflecting unit, the third lighting unit is disposed corresponding to the first focal point of the third reflecting unit, and the third lens unit includes a first lens focal point, the first lens focal point of the third lens unit corresponding to the second focal point of the third reflecting unit and is located on the third optical axis.
 33. The headlight device according to claim 31, wherein the third cut-off plate unit includes a third front cut-off edge, a third rear cut-off edge, and third top side surface, the third front cut-off edge and the third rear cut-off edge are disposed corresponding to each other, and the third top side surface is connected between the third front cut-off edge and the third rear cut-off edge, wherein a third predetermined inclined angle between 20 degrees and 70 degrees is defined between a normal projection of the third top side surface on the vertical plane and the normal projection of the third optical axis on the vertical plane.
 34. The headlight device according to claim 33, wherein the third front cut-off edge is a flush edge.
 35. The headlight device according to claim 33, wherein the first reflecting unit includes a first reflecting element and a second reflecting unit, the first lighting unit includes a first reflecting element and a second reflecting unit, wherein the first reflecting element is corresponding to the first reflecting element and the second reflecting unit is corresponding to the second reflecting unit; wherein the first reflecting element includes a first reflecting surface and a bare reflecting surface, the second reflecting unit includes a second reflecting surface, and the bare reflecting surface is connected between the first reflecting surface and the second reflecting surface, the first reflecting element and the second reflecting unit are alternately disposed to form the bare reflecting surface so that the bare reflecting surface is exposed corresponding to the second reflecting surface.
 36. A bending headlight module, comprising: a first reflecting unit; a first lighting unit, being disposed corresponding to the first reflecting unit; a first cut-off plate unit, being disposed corresponding to the first reflecting unit; and a first lens unit, being disposed corresponding to the first reflecting unit; wherein the first cut-off plate unit includes a first cut-off plate body, a second cut-off plate body, a cut-off plate turning part connecting between the first cut-off plate body and the second cut-off plate body, a cut-off plate protruding part protruding from and being disposed corresponding to the first cut-off plate body and being close to the cut-off plate turning part, a first front cut-off edge, a first rear cut-off edge, and a first top side surface; wherein the first front cut-off edge is formed on the first cut-off plate body, the second cut-off plate body, the cut-off plate turning part, and the cut-off plate protruding part, the first rear cut-off edge is formed on the first cut-off plate body, the second cut-off plate body, the cut-off plate turning part, and the cut-off plate protruding part, the first front cut-off edge and the first rear cut-off edge are disposed corresponding to each other, and the first top side surface is connected between the first front cut-off edge and the first rear cut-off edge; wherein the first top side surface on the cut-off plate turning part is an inclined plane and the first top side surface on the cut-off plate turning part is tilted towards a direction from the first cut-off plate body to the second cut-off plate body.
 37. The bending headlight module according to claim 36, wherein a first predetermined distance between 0.1 mm and 0.5 mm is defined between the first top side surface on the first cut-off plate body of the first cut-off plate unit and the first top side surface on the second cut-off plate body of the first cut-off plate unit.
 38. The bending headlight module according to claim 37, wherein a second predetermined distance is defined between the first optical axis and an edge of the cut-off plate turning part of the first cut-off plate unit that is adjacent to the first optical axis, a size of the second predetermined distance is between 5 times and 11 times of a size of the first predetermined distance.
 39. The bending headlight module according to claim 36, wherein the first cut-off plate body, the cut-off plate turning part, and part of the second cut-off plate body of the first cut-off plate unit is located on a first side of the first optical axis, and another part of the second cut-off plate body of the first cut-off plate unit is located on a second side of the first optical axis, and the first side and the second side are respectively on opposite sides of the first optical axis.
 40. The bending headlight module according to claim 36, wherein in an effective shading range of the first cut-off plate unit, a first predetermined width of the first cut-off plate body of the first cut-off plate unit is smaller than a second predetermined width of the second cut-off plate body of the first cut-off plate unit.
 41. The bending headlight module according to claim 36, wherein the inclined plane on the cut-off plate turning part of the first cut-off plate unit extends from the cut-off plate turning part of the first cut-off plate unit to the second cut-off plate body of the first cut-off plate unit, so as to form a groove structure opposite to the cut-off plate protruding part of the first cut-off plate unit and the second cut-off plate body of the first cut-off plate unit.
 42. The bending headlight module according to claim 36, wherein a first predetermined included angle between 164 degrees and 172 degrees is defined between the first top side surface on the cut-off plate turning part of the first cut-off plate unit and the first top side surface on the second cut-off plate body of the first cut-off plate unit.
 43. The bending headlight module according to claim 36, wherein a predetermined distance between 1.7 mm and 4.7 mm is defined between the first optical axis and an edge of the cut-off plate protruding part of the first cut-off plate unit that is adjacent to the first optical axis. 